... code receiver module 2. 4 channles output 3. Strong noise immunity Operation voltageDC 2.4-5.5VStandby current<1uAOperation frequency315MHz ... modules, wireless receiver control switch, wireless detectors(PIR Motion sensor, door soor, gas detector, smoking deteckor, water leaking ... stop manufacturingWe will be pleased to begin working with you! 433M Learning code receiver module with 4 channels