[IC]：AX5243

[Frequency]：425~450.5MHz

[Power]：7~17dBm

[Distance]：2.0km

[Interface]：UART

[Weight]：2.5±0.1g

[Introduction]：E31-433T17S is a wireless transceiver module based on AX5243 from AXSEM(can be transmitter and receiver).The module uses FEC (forward error correction) algorithm,which greatly improve the anti-interference ability.