This Slim Pro TX module is designed by Happymodel and based on the open source- ExpressLRS which is a very popular low latency and high packet rate RF module for RC Airplane and FPV Racing drone. Its main hardware architecture is ESP32, ESP8285 and SX1280 RF chip. The ES24TX Slim Pro module is a complete solution which is already pre-load the Expresslrs firmware and its plug and play for Frsky X-lite/X-lite pro/X9 Lite, TBS Tango2.
This Slim Pro module comes with an aluminum alloy shell and is equipped with a cooling fan that automatically works when the module is working at 250mw.
The slim pro TX module supports a maximum power output of about 1000mw, this would be very useful for Long Range FPV.