2W RF Module, 433Mhz Wireless Data Transmitter & Receiver, Data Transceiver RS-232, RS-485 or TTL Interface Meter ... Reading,data 2W RF Module, 433Mhz Wireless Data Transmitter & Receiver, Data Transceiver: YS-C30 series data radio designed for Serial ... Low BER (Bit error Rate);* Half duplex: Integration of receiver and transmitter,10ms auto change for receiving and sending;* Low power ...