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  • Module Wisol SFM20R1AT Module Wisol SFM20R1AT

Module Wisol WSSFM20R1AT (Sigfox + GPS + Wifi + BLE)

Quick Overview

Module integrating the Wifi, BLE, GPS and Sigfox networks functions
Excl. Tax: €17.10 Incl. Tax: €20.52

Availability: In stock

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Wisol LogoSigfox Logo


SigFox module of Korean manufacturer Wisol, reference SFM20R1 or WSSFM20R1AT.




This module will allow you to integrate and use the SigFox LPWan network in your IOT project design, offering a very simple data transmission functionality.

This modul also integrates other features, such as GPS, Wifi, BLE and Accelerometer.


  • Sigfox Verified
      • Ultra-Small Footprint 21mm x 29mm x 2.3mm
      • Simple control by AT commands
      • Sigfox Verified Certified Module



Thanks to its small size and the native integration of the GPS and accelerometer sensors, the Wisol SFM20R1 module allows an ultra compact card design.


Sigfox logo

The SigFox network allows sending 12 bytes messages long.
The Sigfox network is nationaly available in many European countries.
Please check the coverage here :  http://www.sigfox.com/en/coverage


Technical specificatins:

  • Power Supply: + 3.3VDC ~ 5.0VDC
  • Tx current: 62mA
  • Current Rx: 15µA
  • idle: 2µA
  • Communiation: UART en série
  • Protocol: AT Command
  • Type: SMD
  • PCBA Size: 21mm x 29mm x 2.3mm
  • Host CPU
    • ARM Cortex M4F
    • 512kB Flash / 64kB RAM
  • Output power : 14dBm
  • Wireless : SIGFOX, WiFi, BLE, GPS
  • Sensor : 3Axes accelerometers
  • NFC : NFC-A tag
  • 8 User configurable GPIO, NFC, I2C, ADC pins


Communication commands:

The module is controlled with serial AT commands sent on TX/RX pins.
Below is the communication specification and AT commands to use.

Serial communication: 9600 bauds, 8bits, 1 stop bit, no parity
AT commands:

Communication test: AT
Get Module ID: AT$I=10
Get PAC code: AT$I=11
Send a SIGFOX message: AT$SF=XXXXXXXXXXXX (Hexadecimal value)
Send a SIGFOX message with downlink frame: AT$SF=XXXXXXXXXXXX,1 (Hexadecimal value)


Additionals information to start your project, are available on the manufacturer's Github: https://github.com/wisol-SFM/WSSFM20Rx_12x​​

Additional Information

Country of Manufacture South Korea
Manufacturer Wisol