... and the user doesnt need to prepare excessive programs Even for semi duplex communication, the user doesnt need to prepare ... radio - frequency integrated circuit and single chip MCU are used for lessened peripheral circuits, high reliability, and low failure rate. ... the reliability of our modules. JZ878 Rf transmitter 433MHZ,options of 450-470MHZ,5/10W,12V,5-20km range wireless broadcasting module