RF Module, 2W RF Module, Industrial Wireless data collection, 433Mhz, 5Km range,Modulation:GFSK Meter Reading,data transmitting RF ... Module, 2W RF Module, Industrial Wireless data collection, 433Mhz: YS-C30 series data radio designed for Serial (UART ... when sleep.Only when the Sleep pin set in the state of high level (VH<3.5V) or hangs/empty, module ...