iMCP HT32SX Sigfox Monarch

System-in-Package iMCP HT32SX Sigfox Monarch from HT Micron

Sigfox WSSFM11R3 module from Seong Ji - Wisol

New Wisol WSSFM11R3AT (Japan RC3c)) modules sold in quantities of 10 minimum. Integrate Sigfox technology at low cost!
€3.58 €2.98
Availability: In stock
Sigfox WSSFM11R3 module from Seong Ji - Wisol is available to buy in increments of 10

Region 3 (Japan RC3c) SigFox module from Korean manufacturer Wisol, reference SFM11R3 or WSSFM11R3AT.
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.

Sigfox Verified
  • Ultra-Small foot-print 13mm x 15mm x 2.21mm
  • Simple control by AT commands
  • Sigfox Verified certified module


Thanks to its small size, the Wisol SFM11R3 module allows a very small board design compared to the existing Sigfox modules on the market.


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 :



Technical specificatins:

  • Power supply: +2.1V~+3.6V
  • Tx current: 47mA (Max)
  • Current Rx: 13.5mA (Max)
  • Communiation: Serial UART
  • Protocol: AT Command
  • Type: SMD
  • PCBA Size: 13mm x 15mm x 2.21mm
  • Chipset : AX-SFJK-1-01/ ON Semiconductor
  • Tx Frequency : 923.2MHz
  • Rx Frequency : 922.2MHz
  • Data rate : TX/100bps - RX/600bps
  • Tx Output Power : +13dBm(max.)@600bps
  • Rx Sensitivity : -127dBm(min.)@600bps
  • Bandwith: 192Khz
  • Current @ 3.3V: TX/47mA(max) RX/13.5mA(max)


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)

More Information
Country of Manufacture South Korea
Manufacturer Wisol-Seong ji