... Channels, Data Transmitter Meter Reading,Environment monitoring 433Mhz RF Module, 5Km Wireless Data Transceiver 8 Frequency Channels, Data ... Meter Reading,Environment monitoring 433Mhz RF Module, 5Km Wireless Data Transceiver: YS-C30 series data radio designed for Serial ( ... , SCADA;4. Installation dimension5. Interface definitionNOTE: Generally the module is in receiving status, if the Sleep pin (No ...