... ;* RS-485 wire multi-drop system changeover wireless system;* Industrial automatic data collection, Wireless Data Acquisition, Wireless sensor, SCADA;4. Setting of channel ... , interface, and data format:User can change or view the module’s ... .0325MHZ 7 435.0325MHZ 8 436.0325MHZ 50mw 800m Tx,Rx module YS-C20UB