Working voltage: DC3.7V-12V wide voltage (DC3.7V 4.5V 5V 6V 7.4V 9V 12V are all possible) This is a receiver with its own USB male and female cable, which can be directly connected to the USB male connector of the power supply and the USB female connector of the device, eliminating the trouble of wiring. Working mode: MOS tube SCR silent and non-contact (control the on and off of the positive electrode VCC +) USB male input, USB female output Frequency: 433.92MHZ, Weight: 0.17857443222 pounds, Manufacturer: Aisuoka