Sierra Wireless 3G Modem

The Sierra Wireless AirLink™ FXT003 is a HSPA 3G modem that can be used to add cellular connectivity to Dataloggers, PLCs and other industrial equipment. It supports standard AT Commands and can be used for SMS and Data communications. For custom applications you program it to run your own OpenAT software.


  • USB 2.0 (Mini-B 5-pin Standard)
  • RS-232 (D15 connector)
  • Slot for internal X-Card 50-pin I/O Interface
  • 10 Pin I/O and Power Connector:
  •      Power
  •      2 GPIO Pins controlled by AT Commands (we do not recommend that you use these)
  •      Microphone and Speaker Interfaces

Network Interfaces

  • SIM Card Slot (1.8V / 3V)
  • SMA Connectors for 50Ohm Antennas
  • LED Network Status Indicator


  • 4.75 – 32VDC
  • Transmit Mode peak current: 3.0A at 4.75V


  • Tri-Band WCDMA 850, 1900, 2100 MHz


  • 89 x 60 x 30mm


  • Operating Temperature Range: -30°C to 70°C
  • Storage Temperature Range: -40°C to 85°C
  • Ingress Protection IP54

Open AT

You can run your own C/C++ software on this modem using the OpenAT Operating System. For this you will need the Sierra Wireless Application Framework software which is available from the Sierra Wireless Developer Zone. We can provide development support for your OpenAT project on a contract basis.


We can supply the following accessories with the FXT003 modem:

  • Mains Plug Pack with 12VDC output. It is terminated with a 10-pin connector that can be plugged directly into the modem.
  • D9-D15 Serial Cable
  • Stubby or Magnetic Base Antennas

Production Status

End of Life. We have limited stock availability. Information on a replacement modem will be available soon.


Please contact us for pricing and availability.