... data collection, 433Mhz, 5Km range,Modulation:GFSK Meter Reading,data transmitting RF Module, 2W RF Module, Industrial Wireless data ... ISM frequency band, half duplex integrated receiving and transmitting.Modules could directly connect with monolithic processors, PC, ... Specifications* RF power: ≤2W /33dBm;* Receiving current: <25mA;* Transmitting current: <1.5A;* Sleep current: <20uA* Power supply: DC ...