Sigfox Only Module, is built-in STM32 MCU, S2-LP and Sky66421 for RC2 and RC4. The design is fully compliant to FCC regulations.
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Countries adapted for RC2, RC4

Commercially available

WSG300S RC24 is a Sigfox modem module for the low power wide area network (LPWAN) market. It is designed with STM’s system S2-LP+STM MCU+Sky66421 for the US or other FCC-like market (FCC Part 15.247). The module was designed for high performance, high quality, low cost, small form factor and most importantly, high RF power of up to 22dBm. The design is fully compliant to FCC regulations. The Sigfox application is running on STM32 MCU at high efficiency using its internal 32bit core Cortex-M0 processor. Every module is preloaded with Sigfox application software, module specific ID/KEY/PAC as referring to Sigfox network system. The preloaded software also includes a bootloader which allows software update or future user application development. 



Sigfox Verified

End Product Certificate M_004E_77AD_01


FCC id : PPQ-WSG300S


Commercially available

Technical Details

Product casing

Dimensions (in mm): 22.5 x 16.5 x 3

Weight: 2gr

Sigfox Connectivity


Max Tx Radiated Power: +22 dBm

Rx Sensitivity: -126 dBm

Product electrical characteristics

Power Supply: From 2.1V to 3.6V

Power Consumption:

Tx: 282 mA

Rx: 15 mA

Idle: 2.2 μA

Embedded Software


External antenna

A connector for an external antenna is available


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