u blox Malmo 0941 Wireless Communication System Module User Manual Electrical and Mechaniocal Datasheet
u-blox Malmo AB Wireless Communication System Module Electrical and Mechaniocal Datasheet
Contents
- 1. Electrical and Mechanical Datasheet
- 2. Electrical and Mechaniocal Datasheet
- 3. Users Manual
- 4. Antenna Guide
- 5. User Manual
Electrical and Mechaniocal Datasheet
![connectBlueCopyright © 2010 connectBlue AB Page 1 of 41CB-0941-02 (OWS451 AND OWL253) ELECTRICALAND MECHANICAL DATASHEETThis is a draft version of the documentDocument RevisionRelease: 18 May, 2011 15:40 Document version: 85Copyright © 2010 connectBlue AB. The contents of this document can be changed by connectBlue AB without prior notice and do not](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-1.png)
![connectBlueCopyright © 2010 connectBlue AB Page 2 of 41constitute any binding undertakings from connectBlue AB. connectBlue AB is not responsible under any circumstances for direct, indirect,unexpected damage or consequent damage that is caused by this document. All rights reserved. All brand and product names aretrademarks or service marks of their respective owners.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-2.png)
![connectBlueCopyright © 2010 connectBlue AB Page 3 of 411 Table of Content1 Table of Content2 Introduction2.1 Key features2.2 Product variants2.3 Block diagram3 Electrical interface and connectors3.1 Pin numbering3.2 Pin description3.3 Characteristics3.4 Hardware Reset3.5 Power Control4 Antenna Information4.1 Surface mounted antenna (internal)4.2 External antennas4.3 Antenna accessories4.4 Antennas5 Mounting information5.1 Module dimensions5.2 Using the J2/J3 board-to-board connectors5.3 Using press-fit nuts for mounting5.4 Recommended M2 screw5.5 Antenna issues6 WLAN information6.1 Radio sensitivity OFDM6.2 Radio sensitivity DSSS7 Regulatory information7.1 Declaration of conformity7.2 IC and FCC compliance7.3 UL listing information7.4 Compliance with RoHS directive8 Guidelines for efficient and safe use8.1 General8.2 Product care8.3 Radio frequency exposure8.4 Electronic equipment8.5 Potentially explosive atmospheres8.6 Safety compliance9 Design examples9.1 Basic design](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-3.png)
![connectBlueCopyright © 2010 connectBlue AB Page 4 of 412 IntroductionThe IEEE 802.11abgn OEM Modules from connectBlue has been developed for integration in industrial devices. The modules areproviding state of the art low power features, compatibility, robustness, and reliability. The modules minimizes the work needed toimplement IEEE 802.11 in a device as it provides, together with the driver package, all software, hardware, type approval, EMCcertification etc. It is developed for reliable, high demanding industrial devices and applications and delivers high performance. TheconnectBlue wireless LAN modules are available in different versions (see Product variants).The wireless LAN modules are complete IEEE 802.11 implementations. The IEEE 802.11 modules has small form factors and theinterface layout is the same as the Bluetooth and IEEE 802.15.4 modules from connectBlue, which enables customers to prepare theirdevice for both wireless LAN, IEEE 802.15.4, and Bluetooth.cB-0941-02 (OWS451i-06) cB-0941-02 (OWL253i-04)2.1 Key featuresDual-band operation (IEEE 802.11-2007, abg, incl. single stream IEEE 802.11n)WEP, AES, and CRC-32 hardware acceleratorsWPA and WPA2 support - both personal and enterprise modesUART host interfaceSPI host interfaceQuality of Service: 802.11e and WMMAd-hoc and infrastructure modeBluetooth co-location with PTA (Packet Traffic Arbitration) supportRadio type approved for Europe.Unlicensed Modular Transmitter Approval for US (FCC) and Canada (IC).Compliant with EMC standards.Industrial temperature range -40 to +85 °C.Support for low power modes.Compatible with connectBlue Bluetooth and IEEE 802.15.4 modulesInternal or external antennaReceive diversity](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-4.png)
![connectBlueCopyright © 2010 connectBlue AB Page 5 of 412.2 Product variantsThis electrical & mechanical data sheet is applicable to the following wireless LAN modules from connectBlue:cB-0941-02The different mounting options of cB-0941-02 hardware (OWS451i/x -04/06 and OWL253i/x-04) are all based on the same PCB.The module is Type Approved and referred in this document with the model name cB-0941-02.ModelFamily Mountingoption FCC ID IC DescriptioncB-0941-02 OWL253i-04 PVH0941 5325A-0941 IEEE802.11abgn LAN module with internal antenna, board-to-boardconnector, solder-lands, high-speed SPI host interfacecB-0941-02 OWL253x-04 PVH0941 5325A-0941 IEEE802.11abgn LAN module with dual external antenna U.FL. connectors,board-to-board connector, solder-lands, high-speed SPI host interfacecB-0941-02 OWS451i-04 PVH0941 5325A-0941 IEEE802.11abgn Serial Port Adapter module with internal antenna,board-to-board connector, solder-lands, UART host interfacecB-0941-02 OWS451x-04 PVH0941 5325A-0941 IEEE802.11abgn Serial Port Adapter module with dual external antenna U.FL.connectors, board-to-board connector, solder-lands, UART host interfacecB-0941-02 OWS451i-06 PVH0941 5325A-0941 IEEE802.11abgn Serial Port Adapter module with internal antenna,board-to-board connector, solder-lands, JST connector, UART host interfacecB-0941-02 OWS451x-06 PVH0941 5325A-0941 IEEE802.11abgn Serial Port Adapter module with dual external antenna U.FL.connectors, board-to-board connector, solder-lands, JST connector, UARThost interface](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-5.png)
![connectBlueCopyright © 2010 connectBlue AB Page 6 of 412.3 Block diagram](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-6.png)
![connectBlueCopyright © 2010 connectBlue AB Page 7 of 413 Electrical interface and connectorsThis section describes the signals available on the module interface connectors. There are three ways of connecting:Via the PCB solder lands on the edge of the PCB, J6 (see figure below: Secondary side connectors). For more information seeSection J6 Solder Lands Description.Via the 2 x 20-pin 1mm pitch board-to-board (one piece part) connectors J2 and J3. The J2 and J3 connectors exist on themodule only as compression pads (see figure below: Secondary side connectors). These pads mates with the carrier boardone-piece part connector. For more information see Section J2 Connector Description and J3 Connector Description.Optional:Via the JST connector, J8 (see figure below: Primary side connectors). The connector is a 6 poles pin header. The pitch is 1mmand the connector is from JST with part number SM06B-SRSS-TB. For more information see section J8 Connector Description.3.1 Pin numbering3.1.1 Primary side connectorsJ8 is the JST connector located on the primary side of the module. A1 is the internal antenna.J4 and J5 are U.FL connectors for external antennas. J4 is the primary antenna connector and J5 the auxiliary antenna connector.3.1.2 Secondary side connectorsJ2 and J3 is the connectBlue board-to-board connector. The pin layout of the connector is compatible with all OEM Serial Port Adaptersfrom connectBlue.The J6 is the solder land connector.The solder lands of connector (J6) have a new layout compared to cB-OWSPA311g.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-7.png)
![connectBlueCopyright © 2010 connectBlue AB Page 8 of 413.2 Pin description3.2.1 J2, J3, J6, J8 connector descriptionJ2PinNrJ3PinNrJ6PinNrJ8PinNrSignal Name SignalLevel Type Description1,2 8 3,25*** 1 VSS Ground Power GND3,4 - 4 2 VCC 3.3 V Power 3.3 - 5.5 VDC power supply 11 - 7 RED/Mode CMOS Out/In This signal is multiplexed: RED: red LED logic signal valid 600ms after power-up (see the section), active low. Operating statusMode: Mode signal is valid as input only during the first 600ms afterstartup, after that its fuction changes to red LED. The Mode pin is active low with internal weak pull-up12 - 6 Switch-0 CMOS In Used for the "Connect on external signal" function, see the Serial PortAdapter AT command Specification for more information on theFunction switch, active low. The Switch-0 pin has internal weak pull-up A secondary function is that the module will restore all factory settings ifboth the Switch-1 and Switch-0 signals are low during start up. See the Serial Port Adapter AT command Specification for moreinformation on the Restoring Default Configuration functionality. See section for design examples.Switch-0 Signal13 - 8 GREEN/ Switch-1 CMOS Out/In This signal is multiplexed: GREEN: gren-LED logic signal valid 500ms after power-up (see the section), active low. Operating statusSwitch-1: Switch-1 signal is valid as input only during the first 500msafter power-up, after that its fuction changes to green-LED. If this pin is pulled-down** the unit goes back to default serial settings. The Switch-1 signal is active low with internal weak pull-up The module will restore all factory settings if both the Switch-1 andSwitch-0 signals are pulled-down during power-up. See the Serial Port Adapter AT command Specification for moreinformation on the Restoring Default Configuration functionality. See section for design examplesGREEN/Switch-114 - 9 5 BLUE CMOS Out Logic Blue LED Signal (see the section).Operating status, table 9Active low. Note:Blue LED will flash when data is transfered. See section for design examples.BLUE Signal15 - 10 5 UART-CTS* CMOS In Logic level UART Clear To Send, active low.16 - 11 3 UART-TxD* CMOS Out Logic level UART Transmit Data, "0" = Low, "1" = High17 - 12 6 UART-RTS* CMOS Out Logic level UART Request To Send, active low.18 - 13 4 UART-RxD* CMOS In Logic level UART Receive Data, "0" = Low, "1" = High19 - 5 - UART-DTR* CMOS Out Logic level UART Data Terminal Ready, active low.20 - 18,30*** - UART-DSR* CMOS In Logic level UART Data Set Ready, active low. 6 28 - SPI-CS0n CMOS In Logic level SPI chip select, active low. 7 27 - SPI-MOSI CMOS In Logic level SPI Master Output Slave Input 9 36 - SerialSelect-0 CMOS Out Control signal for external serial transceivers. See section for more info.Appendix Serial Interface](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-8.png)
![connectBlueCopyright © 2010 connectBlue AB Page 9 of 411. 10 35 - SerialSelect-1 CMOS Out Control signal for external serial transceivers. See section for more info.Appendix Serial Interface 11 26 - SPI-CLK CMOS In Logic level SPI Clk input- 13 24 - SPI-MISO CMOS Out Logic level SPI Master Input Slave Output - 14 23 - SPI-Int CMOS In Logic level SPI external interupt.- 19 1 - Reset-n CMOS In Hardware reset. Active low. internal 100k ohm pull-up- 20 2 - VCC-3V 3.0 V Out Regulated interface voltage for voltage level shifting, max 10mA. 5 -10 1 -5, 12, 15 -1814 -17, 19 -21, 29,31 -34- Reserved, do not connect.*** Alternative signal pin recommended to use in new designs (both signal pins should be connected).Logic level signals are CMOS logic level (-0.3V < VIL < 0.8V, 2.3V < VIH < 3.3V).3.2.2 J4 Primary external antenna connectorJ4 is the primary external antenna connector. It is used for both transmit and receive. The port impedance to match is 50 ohm.J4 pin nr Pin name Signal level Type Description1 Ant-1 RF I/O Primary external antenna port (50 ohm)This connector is only available on OWS451x and OWL253x.3.2.3 J5 Auxiliary external antenna connectorJ5 is the auxiliary external antenna connector. It is used only for receiving and if the unit is configured for receive diversity mode. The unitnever transmits RF through this antenna connector. The port impedance to match is 50 ohm.J5 pin nr Pin name Signal level Type Description1 Ant-1 RF I Auxiliary external antenna port (50 ohm)This connector is only available on OWS451x and OWL253x.UART signals are CMOS logic level (-0.3V < VIL < 0.9V, 2.1V < VIH < 3.3V)](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-9.png)
![connectBlueCopyright © 2010 connectBlue AB Page 10 of 413.3 CharacteristicsThe cB-0941-02 family is designed to be fully interchangeable with the connectBlue Bluetooth product range. If the host product hasspace for the board, it is possible to choose freely between Bluetooth modules, e.g. cB-OEMSPA311i/x or cB-OEMSPA331i/x, or WLANmodules, e.g. OWSPA311gi/x, without any change of the host product. If you design your power supply for OWS451i/x the modules willbe fully interchangeable.3.3.1 Power supplyRead the safety notes in section Guidelines for Efficient and Safe Use before using the modules.3.3.1.1 Supply voltageSymbol Parameter Min Typ. Max UnitVDD Supply voltage 3.3 5.5 V](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-10.png)
![connectBlueCopyright © 2010 connectBlue AB Page 11 of 413.3.1.2 Current consumption3.3.1.2.1 cB-0941-02 (OWS451)Symbol Power Mode State Band DTIM Min Typ. Max UnitIDD @3.3VDC Global Reset 16 mA Start-up 130 150 mA Peak 350 mA Sleep Idle, no connection 26 mA Managed, connected 2.4GHz 1 26 mA Managed, connected 5GHz 1 28 mA Managed, connected 2.4GHz 5 26 mA Managed, connected 5GHz 5 28 mA Managed, data throughput 1Mbit/s 2.4GHz 180 mA Managed, data throughput 1Mbit/s 5GHz 230 mA Online Idle, no connection 26 mA Managed, connected 2.4GHz 1 26 mA Managed, connected 5GHz 1 28 mA Managed, connected 2.4GHz 5 26 mA Managed, connected 5GHz 5 28 mA Managed, data throughput 1Mbit/s 2.4GHz 180 mA Managed, data throughput 1Mbit/s 5GHz 230 mA Stop Idle, no connection 7 mA Managed, connected 2.4GHz 1 26 mA Managed, connected 5GHz 1 28 mA Managed, connected 2.4GHz 5 26 mA Managed, connected 5GHz 5 28 mA Managed, data throughput 1Mbit/s 2.4GHz 180 mA Managed, data throughput 1Mbit/s 5GHz 230 mAPower consumption in sleep, online, and stop mode are measured in managed mode using firmware release 2.8.1.3.3.1.2.2 OWS253Symbol Mode Min Typ. Max Unit](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-11.png)
![connectBlueCopyright © 2010 connectBlue AB Page 12 of 413.3.2 Input/output signalsSymbol Parameter Min Typ Max UnitVIN Low Logic LOW level input voltage on all logic -0.3 0.85 VVIN High Logic HIGH level input voltage 2.1 3.3 VVOUT Low Logic LOW level output voltage 0.4 VVOUT High Logic HIGH level output voltage 2.5 VI GPIO Sink and source current 4.0 mAC GPIO Input capacitance 8 pF3.4 Hardware ResetA hardware-reset input is available on the J1 and J3 connectors. An external reset source must be open drain or collector. The RESET-npin is pulled-up internally with 56 kohm.3.5 Power ControlThe wireless LAN modules can be operated in several different power modes.Standard IEEE802.11 power saveUAPSD/WMM Power Save Support](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-12.png)
![connectBlueCopyright © 2010 connectBlue AB Page 13 of 414 Antenna InformationThis chapter gives a quality overview of the different antenna options.There are 2 different antenna options available:An internal surface mounted (SMD) dual band antenna.Two U.FL connectors for external antennas. Different types of external antennas are available. 4.0.0.1 CautionThis radio transmitter IC: 5325A-0941 cB-0941-02 has been approved by Industry Canada to operate with the antennatypes listed below with the maximum permissible gain and required antenna impedance for each antenna typeindicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type,are strictly prohibited for use with this device.Cet émetteur radio IC: 5325A-0941 cB-0941-02 a été approuvé par Industry Canada pour fonctionner avec les typesd’antenne énumérés ci-dessous avec le gain maximum autorisé et l’impédance nécessaire pour chaque type d’antenneindiqué. Les types d’antenne ne figurant pas dans cette liste et ayant un gain supérieur au gain maximum indiqué pource type-là sont strictement interdits d’utilisation avec cet appareil.4.1 Surface mounted antenna (internal)Part number cB-0941-02 (OWL253i / OWS451i)Antenna FR05-S1-NO-1-004Manufacturer FractusGain 0 dBi @ 2.4GHz, 3 dBi @ 5GHzavg. VSWR 3.1 @ 2.4GHz, 2.3 @ 5GHzavg. Efficiency 22% @ 2.4GHz, 39% @ 5GHzAntenna size (LxWxH) 7 x 3 x 2 mmComments The antenna gain is very dependent of the mounting of the module. The unit cannot be mounted in a metal-shielded enclosure with this antenna.4.1.1 Radiation patterns](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-13.png)
![connectBlueCopyright © 2010 connectBlue AB Page 14 of 414.1.1.1 Radiation Pattern Cuts @2450 MHz – Free Space](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-14.png)
![connectBlueCopyright © 2010 connectBlue AB Page 15 of 414.1.1.2 Radiation Pattern Cuts @5400 MHz – Free Space](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-15.png)
![connectBlueCopyright © 2010 connectBlue AB Page 16 of 414.2 External antennasThe external antennas are connected to the module with the on board U.FL connectors. Some antennas are connected directly tothe U.FL connector and some are connected via a U.FL to SMA (cB-ACC-18 or cB-ACC-48) or U.FL to reversed polarity SMA(cB-ACC-38) adapter cable.The sections below lists the antennas that are included in the radio type approvals of the module. For each antenna the "Approvals" fielddefines in what country/region the antenna is allowed to use. Definitions of the "Approvals" field are:FCC - The antenna is included in the FCC test reports, and thus approved for use in countries that accept the FCC radioapprovals, primarily US.IC - The antenna is included in the IC (Industrie Canada) test reports, and thus approved for use in countries that accept the ICradio approvals, primarily Canada.R&TTE - The antenna is included in the R&TTE test reports, and thus approved for use in countries that accept the R&TTE radioapprovals, primarily the European countries.In general, antennas with Reverse Polarity SMA connector or U.FL connector are included in FCC, IC and R&TTE radio tests.Antennas with SMA connector are not allowed to be used in Canada and USA due to FCC/IC regulations but are in general included inR&TTE radio tests.Antennas with a part number in the form "cB-ACC-XX" are available for orders via the connectBlue distribution network.For information about other antennas please contact connectBlue](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-16.png)
![connectBlueCopyright © 2010 connectBlue AB Page 17 of 414.3 Antenna accessoriesPartNumber cB-ACC-18 / cB-ACC-48 Name U.FL to SMA adapter cableConnector U.FL and SMA jack (outer thread and pin receptacle) Cable length 120 mm Cable loss Less than 0.5 dB Comment The SMA connector may be mounted in a panel. Approval Approved for use in Europe but NOT approved for use in the US andCanada. Part Number cB-ACC-38 Name U.FL to Reverse Polarity SMA adapter cableConnector U.FL and Reverse Polarity SMA jack (outer thread and pin) Cable length 120 mm Cable loss Less than 0.5 dB Comment The Reverse Polarity SMA connector may be mounted in a panel. Approval Approved for use in US, Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-17.png)
![connectBlueCopyright © 2010 connectBlue AB Page 18 of 414.4 Antennas4.4.1 Recommended antennasPartNumber cB-ACC-53 Name Ex-IT WLAN RP-SMA (dual-band) Manufacture ProAnt Polarization Vertical Gain / Imp. +3.0 dBi / 50ohm @ 2.4 GHz, +3.0 dBi / 50ohm @ 5 GHz Size Ø 10 x 107 mm Connector Reverse Polarity SMA plug (inner thread and pin receptacle) Comment To be used together with the U.FL to SMA adapter cable(cB-ACC-38). An alternative SMA version antenna is available but not recommended (cB-ACC-54 / Ex-IT WLAN SMA). Approval The antenna is approved for use in US, Canada and Europe. The alternative SMA version is approved for use in Europe but NOTapproved for use in the US and Canada.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-18.png)
![connectBlueCopyright © 2010 connectBlue AB Page 19 of 41Part Number cB-ACC-63 Name Ex-IT 2400-MHF 28-001Manufacture ProAnt Polarization Vertical Gain / Imp. +2.0 dBi / 50ohm Size Ø 12 x 28 mm Cable length 100 mm Connector U.FL Comment To be connected to the U.FL connector on the PCB. Approval The antenna is approved for use in US, Canada and Europe. Part Number cB-ACC-61 Name Ex-IT 2400-RP-SMA 28-001 Manufacture ProAnt Polarization Vertical Gain / Imp. +2.0 dBi / 50ohm @ Size Ø 12 x 28 mm Connector Reverse Polarity SMA plug (inner thread and pin receptacle) Comment To be used together with the U.FL to SMA adapter cable(cB-ACC-38). Approval The antenna is approved for use in US, Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-19.png)
![connectBlueCopyright © 2010 connectBlue AB Page 20 of 41Part Number cB-ACC-64 Name Ex-IT 2400-RP-SMA 70-002 Manufacture ProAnt Polarization Vertical Gain / Imp. +3.0 dBi / 50ohm @ Size Ø 10 x 86 mm Connector Reverse Polarity SMA plug (inner thread and pin receptacle) Comment To be used together with the U.FL to SMA adapter cable(cB-ACC-38). Approval The antenna is approved for use in US, Canada and Europe. Part Number cB-ACC-60 Name Ex-IT 2400-MHF 70-001Manufacture ProAnt Polarization Vertical Gain / Imp. +3.0 dBi / 50ohm Size Ø 10 x 70 mm Cable length 100 mm Connector U.FL Comment To be connected to the U.FL connector on the PCB. Approval The antenna is approved for use in US, Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-20.png)
![connectBlueCopyright © 2010 connectBlue AB Page 21 of 41Part Number cB-ACC-55 Name InSide WLAN (dual band)Manufacture ProAnt Polarization Vertical Gain / Imp. +3.0 dBi / 50ohm @ 2.4 GHz +3.0 dBi / 50ohm @ 5 GHz Size 27 x 12 mm (triangular) Cable length 100 mm Connector U.FL Comment To be connected to the U.FL connector on the PCB. Approval The antenna is approved for use in US, Canada and Europe. Part Number cB-ACC-67 Name OutSide-2400Manufacture ProAnt Polarization Vertical Gain / Imp. +3.0 dBi / 50ohm Size 36 x 18 x 16 mm Cable length 100 / 250 mm Connector U.FL Comment To be connected to the U.FL connector on the PCB. Approval The antenna is approved for use in US, Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-21.png)
![connectBlueCopyright © 2010 connectBlue AB Page 22 of 41PartNumber cB-ACC-66 Name FlatWhip 2400Manufacture ProAnt Gain / Imp. +3.0 dBi / 50ohm Size Ø 50.0 x 30.0 mm Connector SMA plug (inner thread and pin) Comment To be used together with the U.FL to SMA adapter cable. Approval The antenna is approved for Europe but NOT approved for use in the US andCanada. Please contact connectBlue for information about US and Canada approvedversions of the antenna with Reverse Polarity SMA connector.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-22.png)
![connectBlueCopyright © 2010 connectBlue AB Page 23 of 414.4.2 Alternative antennasThe alternative antennas are available for backward compability but not recommended for new designs. PartNumber cB-ACC-27 Name WCR-2400-IP04 Manufacture Centurion Polarization Vertical Gain / Imp. +2.0 dBi / 50ohm Size Ø 12 x 76 mm Cablelength 100 mm Connector U.FL Comment To be connected to the U.FL connector on the PCB. Approval The antenna is approved for use in US, Canada andEurope.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-23.png)
![connectBlueCopyright © 2010 connectBlue AB Page 24 of 41Part Number cB-ACC-36 Name WCR-2400-RP-SMRP Manufacture Centurion Polarization Vertical Gain / Imp. +2.0 dBi / 50ohm Size Ø 12 x 76 mm Connector Reverse Polarity SMA plug (inner thread and pin receptacle) Comment To be used together with the U.FL to RPSMA adapter cable (cB-ACC-38). Approval The antenna is approved for use in US, Canada and Europe. Part Number - Name PSTG0-2400HS Manufacture MobileMark Polarization Vertical Gain / Imp. +0 dBi / 50ohm Size Ø 12 x 32 mm Connector Reverse Polarity SMA plug (inner thread and pin receptacle) Comment To be used together with the U.FL to RPSMA adapter cable (cB-ACC-38). Approval The antenna is approved for use in US, Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-24.png)
![connectBlueCopyright © 2010 connectBlue AB Page 25 of 41PartNumber cB-ACC-21 Name R380.500.127 Manufacture Pulse Polarization Vertical Gain / Imp. +2.0 dBi / 50ohm Size Ø 14.3 x 61.4 mm Connector SMA plug (inner thread and pin) Comment To be mounted on the U.FL to SMA adapter cable (cB-ACC-18 or cB-ACC-48). A Reverse Polarity SMA version is also available (R380.500.125). Approval The SMA version is approved for use in Europe but NOT approved for use in the US andCanada. The alternative Reverse Polarity SMA version antenna is approved for use in the US,Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-25.png)
![connectBlueCopyright © 2010 connectBlue AB Page 26 of 41PartNumber — Name R380.500.139 Manufacture Pulse Polarization Vertical Gain / Imp. +2.0 dBi / 50 ohm Size Ø 14.3 x 61.1 mm Connector Reverse Polarity SMA plug (inner thread and pin receptacle) Comment The difference compared to the R380.500.125 antenna is that the R380.500.139 antennahas a seal ring. To be mounted on the U.FL to Reverse Polarity SMA adapter cable (cB-ACC-38). An SMA version antenna is also available (R380.500.124). Approval The Reverse Polarity SMA version antenna is approved for use in the US, Canada andEurope. The alternative SMA version is approved for use in Europe but NOT approved for use inthe US and Canada. Part Number cB-ACC-28 Name NanoBlue-IP04 Manufacture Centurion Polarization Vertical Gain / Imp. +2.0 dBi / 50ohm Size 47.8 x 12.7 mm Cable length 100 mm Connector U.FL Comment To be connected to the U.FL connector on the PCB. Approval The antenna is approved for use in US, Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-26.png)
![connectBlueCopyright © 2010 connectBlue AB Page 27 of 41PartNumber cB-ACC-17 Name PlanTec m70cxr Manufacture Reel Polarization Vertical Gain / Imp. +1.0 dBi / 50ohm Size Ø 76.0 x 20.7 mm.0 Cablelength 20/100/300 cm Connector Reverse Polarity SMA plug (inner threadand pin receptacle) Comment To be used together with the U.FL toRPSMA adapter cable(cB-ACC-38). Approval The antenna is approved for use in US,Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-27.png)
![connectBlueCopyright © 2010 connectBlue AB Page 28 of 414.4.3 Customer specific antennasPart Number —Name InSide EPA WLANManufacture ProAntPolarization CircularGain / Imp. +3.0 dBi / 50 ohmSize 66 x 90 x 36 mmConnector U.FL-R-SMTComment Frequency 5150 - 5350 MHz (5.0 - 6.0 GHz)Approval approved for use in the US, Canada and Europe. Part Number —Name Inside EPA 2400Manufacture ProAntPolarization Mixed horizontal and verticalGain / Imp. +3.0 dBi / 50 ohmSize 66 x 90 x 36 mmConnector U.FL-RSMTComment Frequency 2400 - 2485 MHzApproval approved for use in the US, Canada and Europe. Part Number —Name SDM2-2400 / 1575Manufacture Mobile MarkPolarization VerticalGain / Imp. +2.0 dBi / 50 ohmSize Ø 65.0 x 28.6 mmCable length 200 mmConnector U.FLComment Frequency 2400 - 2500 MHzApproval approved for use in the US, Canada and Europe.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-28.png)
![connectBlueCopyright © 2010 connectBlue AB Page 29 of 415 Mounting information5.1 Module dimensions](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-29.png)
![connectBlueCopyright © 2010 connectBlue AB Page 30 of 411. 2. Tolerances:Outline dimensions +/- 0.1mmDrilled hole to outline: +/- 0.05mm5.1.1 Mounting holesThere are 2 x 2.3mm mounting holes on cB-0942. The reasons for the 2.3mm holes are that the threaded M2 holes on the single anddouble row connectors (see section 4.2.1) are not aligned. The outer tangents of the 2.3mm holes align the module if the single rowconnectors are used and the inner if double row connectors are used (see Figure 11).Choose the outer tangent (CC distance 27.24mm) if the module is aligned and mounted with some other technique based on M2 screws(e.g. press-fit nuts), see Figure 12.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-30.png)
![connectBlueCopyright © 2010 connectBlue AB Page 31 of 415.2 Using the J2/J3 board-to-board connectorsThe board-to-board connector should be a 1 mm pitch one-piece part connector. The recommended manufacture is Samtec with manyconnector options available; see section 4.2.1.1.Chapter 2 contains more information about the connector and the electrical interface.5.2.1 Suitable one-piece part connectors5.2.2 Double row ASP-118580-01 / ASP-118581-01 connectorsThis connector is a double row connector and connects both J2 and J3. It connector has a height of 3.0 mm and this has to beconsidered if components are to be mounted on the motherboard under the board. The connector is also available with a height of 6.0mm and 10.0 mm (The FSI-120 serie from Samtec).There are alignment pins on the bottom side of the connector.The connector is available with M2 threaded inserts (ASP-118580-01) that fit the mounting holes on the board. You may screw the boarddirectly into these inserts. If you want to have a tighter and more secure mounting you may use longer screws and secure it using a nuton the backside of the motherboard.Another way to mount the module is to use press-fit nuts on the motherboard and skip the M2 threads on the connector(ASP-118581-01), see section 4.3 for more information about press-fit nuts.Samtec ordernumber Quotenumber Equivalent part Package RemarkREF-120021-01 55392 FSI-120-03-G-D-AB Tube Align pin on bottom side onlyREF-120021-02 55392 FSI-120-03-G-D-AB-K-TR Tape-n-Reel Align pin on bottom side onlyREF-120018-01 55392 FSI-120-03-G-D-M-AB Tube With M2 threaded inserts and align pin on bottomside onlyREF-120018-02 55392 FSI-120-03-G-D-M-AB-K-TR Tape-n-Reel With M2 threaded inserts and align pin on bottomside onlyWhen ordering connectors from Samtec or an official Samtec distributor, please use the REF order number and refer tothe connectBlue global quote number for best price. For technical questions regarding the Samtec connectors pleasecontact connectBlue or Samtec at Scandinavia@samtec.com.See figure below for more information about the connector and necessary measurements on the motherboard. The large mounting holeson the motherboard are designed for press-fit nuts and could be smaller if press-fit nuts are not used.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-31.png)
![connectBlueCopyright © 2010 connectBlue AB Page 32 of 415.3 Using press-fit nuts for mountingA press-fit nut is pressed into the PCB from the bottom side with a special press tool. M2 sized press-fit nuts are suitable for the modules(see figure below) and are manufactured by PEM Fastening Systems, , part no KFS2-M2. Be careful with the distancewww.pemnet.combetween the nuts regarding alignment.Spacer-pipes are recommended to use between the PCBs when press-fit nuts are used.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-32.png)
![connectBlueCopyright © 2010 connectBlue AB Page 33 of 415.4 Recommended M2 screwIf a double-row connector with threaded inserts or press-fit nuts are used, then recommended for mounting of modules is a ISO 7380 M2compatible screw. A suitable screw is the BN6404 from Bossard, , with TORX T6 head cap. See figure below.www.bossard.comParameter Value Unitd2 3.5 mmk max 1.3 mmt max 0.8 mmA 2.0 mmIf other type of screw is used please ensure that d2 is less than 3.8 mm otherwise components near the mounting holescan be damaged.5.5 Antenna issuesThe unit cannot be mounted arbitrary, because of the radio communication. The unit with an internal surface mounted antenna cannot bemounted in a metal enclosure. No metal casing or plastics using metal flakes should be used, avoid also metallic based paint or lacquer.Keep a minimum clearance of 10 mm between the antenna and the casing. Keep 10 mm free space from metal around the antenna. If ametal enclosure is required, one of the external antenna options has to be used. See section 3.2 for more information on the antennaoptions available.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-33.png)
![connectBlueCopyright © 2010 connectBlue AB Page 34 of 416 WLAN informationIn the tables below you can find information about WLAN properties.Parameter DataRadio Redpine Signals RS9110 + Airoha 8230RF output power 802.11b (CCK): +20dBm (typ.) 802.11g (OFDM): +17dBm (typ.) 802.11a (OFDM): +10dBm (typ.)Receiver sensitivity See table belowReceive input level (max) -10 dBmOutput frequency 2.412 - 2.462 GHz, channel 1 - 11 5 MHz channel separation 5.180 - 5.240 GHz, U-NII-1, channel 36, 40, 44, 48 20 MHz channel separation Bluetooth co-existence CSR traditional 3-wire6.1 Radio sensitivity OFDMData rate 802.11gn (channel 6, 2437MHz, dBm) 802.11an (channel 36, 5180MHz, dBm)MCS7 -69 -68MCS6 -70 -70MCS5 -72 -72MCS4 -76 -76MCS3 -79 -79MCS2 -82 -82MCS1 -84 -83MCS0 -87 -8654 -73 -7248 -75 -7336 -78 -7824 -83 -8018 -85 -8312 -87 -859 -88 -866 -89 -87](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-34.png)
![connectBlueCopyright © 2010 connectBlue AB Page 35 of 416.2 Radio sensitivity DSSSData rate 802.11b (channel 6, 2437MHz, dBm)11 -865.5 -892 -911 -94](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-35.png)
![connectBlueCopyright © 2010 connectBlue AB Page 36 of 417 Regulatory informationLimitationsWith current type approvals the module is allowed to operate only on the 2.4 GHz ISM band and on the 5 GHz U-NII band 1.7.1 Declaration of conformity We, connectBlue AB, ofNorra Vallgatan 64 3VSE-211 22 Malmö, Swedendeclare under our sole responsibility that our product:cB-0941-02 (OWL253i)cB-0941-02 (OWL253x)cB-0941-02 (OWS451i)cB-0941-02 (OWS451x)to which this declaration relates, conforms to the following product specifications:R&TTE Directive 1999/5/ECEN 300 328 V1.7.1 (2006-10)EN 301 893 V1.5.1 (2008-12)EN 301 489-1 V1.8.1 (2008-04)EN 301 489-17 V2.1.1 (2009-05)EN 61000-6-2 (2005)Safety ComplianceIEC 60950-1: 2005 (2nd Edition) and/or EN 60950-1: 2006Medical Electrical EquipmentIEC 60601-1-2 : 20072011-03-11 Malmö, SwedenMats AnderssonCTO of connectBlue ABIf cB-0941-02 is used within EU a notification may be necessary to be made to each of the national authorities responsible for radiospectrum management of the intention to place radio equipment that uses frequency bands whose use is not harmonized throughout theEU, on its national market.More information at: http://europa.eu.int/comm/enterprise/rtte/gener.htm](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-36.png)
![connectBlueCopyright © 2010 connectBlue AB Page 37 of 411. 2. 1. 2. 1. 2. 7.2 IC and FCC complianceSee for information about the different product variants.Product variants7.2.1 IC ComplianceThis device complies with Industry Canada licence-exempt RSS standard(s).Operation is subject to the following two conditions:this device may not cause interference, andthis device must accept any interference, including interference that may cause undesired operation of the device.Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gainapproved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gainshould be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successfulcommunication.Within the band 5150 - 5250 MHz the operation of this device is restricted to indoor use to reduce the potential for harmful interference toco-channel mobile sattelite systems. This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should beinstalled and operated with minimum distance 20 cm between the radiator & your body.7.2.2 Conformité aux normes d’ICCet appareil est conforme à la(aux) norme(s) RSS sans licence d’Industry Canada.Son utilisation est soumise aux deux conditions suivantes :Cet appareil ne doit pas causer d’interférences etil doit accepter toutes interférences reçues, y compris celles susceptibles d’avoir des effets indésirables sur son fonctionnement.Conformément aux réglementations d’Industry Canada, cet émetteur radio ne peut fonctionner qu’à l’aide d’une antenne dont le type et legain maximal (ou minimal) ont été approuvés pour cet émetteur par Industry Canada. Pour réduire le risque d’interférences avec d’autresutilisateurs, il faut choisir le type d’antenne et son gain de telle sorte que la puissance isotrope rayonnée équivalente (p.i.r.e) ne soit passupérieure à celle requise pour obtenir une communication satisfaisante.Dans la bande de fréquences 5150 - 5250 MHz, le fonctionnement de cet appareil est limité à une utilisation à l’intérieur pour réduire lepotentiel d’interférences brouillant les systèmes satellites mobiles d’un même canal.Cet équipement respecte les limites d’exposition aux rayonnements IC RSS-102 définies pour un environnement non contrôlé. Il doit êtreinstallé et utilisé en maintenant une distance minimum de 20 cm entre le radiateur et votre corps.7.2.3 FCC statementThis device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:this device may not cause harmful interference, andthis device must accept any interference received, including interference that may cause undesired operation.This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 ofthe FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residentialinstallation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used inaccordance with the instructions, may cause harmful interference to radio communications. However, there is noguarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference toradio or television reception, which can be determined by turning the equipment off and on, the user is encouraged totry to correct the interference by one or more of the following measures:Reorient or relocate the receiving antennaIncrease the separation between the equipment and receiverConnect the equipment into an outlet on a circuit different from that to which the receiver is connectedConsult the dealer or an experienced radio/TV technician for help.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-37.png)
![connectBlueCopyright © 2010 connectBlue AB Page 38 of 411. 2. 1. 2. 1. 2. 7.2.3.1 End product labelling requirementsFor an end product using the product cB-0941-02 there MUST be a label containing, at least, the following information:This device containsFCC ID: PVH0941 IC: 5325A-0941The label must be affixed on an exterior surface of the end product such that it will be visible upon inspection in compliance with themodular approval guidelines developed by the FCC. 7.2.3.1.1 FCC End product labellingIn accordance with 47 CFR § 15.19 the end product shall bear the following statement in a conspicuous location on the device:"This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:this device may not cause harmful interference, andthis device must accept any interference received, including interference that may cause undesired operation."When the device is so small or for such use that it is not practicable to place the statementabove on it, the information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or,alternatively, shall be placed on the container in which the device is marketed. However, the FCC ID label must be displayed on thedevice.In case, where the final product will be installed in locations where the end-consumeris not able to see the FCC ID and/or this statement, the FCC ID and the statement shall also be included in the end-product manual.7.2.3.1.2 IC End product labellingUser manuals for licence-exempt LPDs shall contain the following or equivalent statements in a conspicuous position:Operation is subject to the following two conditions:this device may not cause interference, andthis device must accept any interference, including interference that may cause undesired operation of the device.7.2.3.1.3 Étiquetage du produit final conforme à ICLes manuels d’utilisation d’appareils de faible puissance, sans licence, feront figurer à un endroit bien visible les mentions suivantes ouéquivalentes :Son utilisation est soumise aux deux conditions suivantes :Cet appareil ne doit pas causer d’interférences etil doit accepter toutes interférences reçues, y compris celles susceptibles d’avoir des effets indésirables sur son fonctionnement.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-38.png)
![connectBlueCopyright © 2010 connectBlue AB Page 39 of 417.2.3.2 AntennaOur module cB-0941-02 are for OEM integrations only. In the end-user product the module shall be professionally installed in such amanner that only the authorized antennas can be used.7.2.3.3 CautionAny changes or modifications NOT explicitly APPROVED by connectBlue AB could cause the module to cease tocomply with FCC rules part 15, and thus void the user's authority to operate the equipment.Within the 5150 to 5250 MHz band (5 GHz radio channels 34 to 48) the module type cB-0941-02 is restricted to indooroperations to reduce any potential for harmful interference to co-channel MSS operation.§15.407 statement; in case of absence of information to transmit or operational failure the module types cB-0941-02 willautomatically discontinue transmission.7.2.3.4 Ad-hoc frequenciesModule cB-0941-02 when operating under the definition of a client in 47 CFR §15.202 is preconfigured to use the most restrictiveregulatory domain. For this reason the available operating frequency range is limited to channel 1 - 11 (2412 - 2462 MHz) forIEEE802.11b/g. For IEEE802.11a the available operating frequency range is limited to channels 36 - 48 (5180 - 5240 MHz).7.2.3.5 RF-exposure statementThis equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installedand operated with minimum distance 20 cm between the radiator & your body.This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should beinstalled and operated with minimum distance 20 cm between the radiator & your body.Cet équipement est conforme aux limites d'exposition de rayonnement d'IC RSS-102 déterminées pour un environnement non contrôlé.Cet équipement devrait être installé et actionné avec la distance minimum 20 cm entre le radiateur et votre corps.Any notification to the end user of installation or removal instructions about the integrated radio module is NOT allowed.7.3 UL listing informationIf a customer intends to UL list a product including the cB-0941 this information is useful.The printed circuit board is produced according to the following specification:UL recognized ZPMV2 min. 130 °C flame class V-0 or better.7.4 Compliance with RoHS directive The cB-0941-02 are produced according to the RoHS (Restriction of the use of certain Hazardous Substances in electrical and electronicequipment) directive and complies with the directive.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-39.png)
![connectBlueCopyright © 2010 connectBlue AB Page 40 of 418 Guidelines for efficient and safe use8.1 GeneralRead this information before using your cB-0941-02 module.For any exceptions, due to national requirements or limitations, when using your WLAN module cB-0941-02, please contact connectBlueAB.Changes or modifications to the product not expressly approved by connectBlue AB will void the user's authority tooperate the equipment.8.2 Product careDo not expose your product to liquid or moisture.Do not expose you product to extreme hot or cold temperature.Do not expose your product to lit candles, cigarettes, cigars, open flames, etc.Do not drop, throw or try to bend your product since rough treatment could damage your product.Do not attempt to disassemble your product. Doing so will void warranty. The product does not contain consumer serviceable orreplaceable components. Service should only be performed by connectBlue AB.Do not paint your product as the paint could prevent normal use.If you will not be using your product for a while, store it in a place that is dry, free fromdamp, dust and extreme heat and cold.The clearance and creepage distances required by the end product must be withheld when the module is installed.The cooling of the end product shall not negatively be influenced by the installation of the module when the module is installed.8.3 Radio frequency exposureThe cB-0941-02 WLAN module contains a small radio transmitter and receiver.During communication with other WLAN products the cB-0941-02 module transmits and receives radio frequency (RF) electromagneticfields (microwaves) in the frequency range 2412 - 2462 MHz and 5180 - 5240 MHz. The output power of the radio transmitter is very low.When using the cB-0941-02, you will be exposed to some of the transmitted RF energy. This exposure is well below the prescribed limitsin all national and international RF safety standards and regulations.8.4 Electronic equipmentMost modern electronic equipment, for example, in hospitals and cars, is shielded from RF energy. However, certain electronicequipment is not. Therefore:This equipment emits RF energy in the ISM (Industrial, Scientific, Medical) band. Please insure that all medical devicesused in proximity to this device meet appropriate susceptibility specifications for this type of RF energy.8.5 Potentially explosive atmospheresTurn off your electronic device before entering an area with potentially explosive atmosphere. It is rare, but your electronic device couldgenerate sparks. Sparks in such areas could cause an explosion or fire resulting in bodily injury or even death.Areas with a potentially explosive atmosphere are often, but not always, clearly marked. They include fuelling areas, such as petrolstation, below deck on boats, fuel or chemical transfer or storage facilities, and areas where the air contains chemicals or particles, suchas grain, dust, or metal powders.8.6 Safety complianceIn order to fulfill the safety standard EN 60950-1:2006 the WLAN module cB-0941-02 must be supplied by a Class-2 Limited PowerSource.8.6.1 Power supplyConnect your power supply only to designated power-sources as marked on the product.To reduce risk of electric shock, unplug the unit from any power source before attempting to clean it.](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-40.png)
![connectBlueCopyright © 2010 connectBlue AB Page 41 of 419 Design examples9.1 Basic design](https://usermanual.wiki/u-blox-Malmo/0941.Electrical-and-Mechaniocal-Datasheet/User-Guide-1468651-Page-41.png)