WF923 module is an Uplink only module which enables SIGFOX communication in Japan, to enjoy longer battery thanks to low energy consumption. Either external or inaternal antenna is available for your choice. Interface is UART, I2C, Digital I/O, and AD input.
End Product Certificate M_0031_CC23_01
Dimensions (in mm): 35 x 20 x 2
Power Supply: From 2.2V to 3.8V
Tx: 32 mA
Idle: 1 μA