... <360mA(JZ874B),. <100mA(JZ874A),3. ISM frequency band, not requiring on application of frequency pointCarrier frequency of 428---433MHz,also capable of 868 ... air, control, etc.10. High reliability, small and lightSingle chip radio- frequency integrated circuit and single chip MCU are used for lessenedperipheral ... to achieve a optimal effect. USB RF Transmitter and Receiver System JZ874