USB male input, USB female output 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 voltage: DC3.7V-12V wide voltage (DC3.7V 4.5V 5V 6V 7.4V 9V 12V are all possible) Working mode: MOS tube SCR silent and non-contact (control the on and off of the positive electrode VCC +) Frequency: 433.92MHZ Standby & working current: 6mA Load capacity: 3A Working Distance: 10-50m Code pairing method: The receiver has a learning function, can be equipped with a remote control or multiple remotes, and can be set for multiple sets of universal Encode:EV1527 330K Color:Black Material:plastic Package Contents: 1 x USB Controller 2 x Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.