This is a receiver with USB male and female cable, which can be directly connected to the male connector of the power supply and the female connector of the device, eliminating the trouble of wiring. voltage 5V can be used. Length: 22CM/8.2INCH Working mode: MOS tube SCR silent and non-contact (control e positive electrode VCC + ) Frequency: 433.92MHZ Standby & working current: 6mA Load capacity: 3A Receiver Weight: 20g Code pairing method: The receiver has a learning function, can be equipped with a remote control, and can be set for multiple sets of universal Transmitter: 1. Buttons: 2 Buttons 2. Working Voltage:DC6V (2PCS CR2016) 3. Operating frequency :433MHz 4. Remote Distance: 20-50M 5. Operating Current: 13 mAh 6. Encode: EV1527 330K 7. Size: 5.7 x 3.2 x 1.1cm Colour:Black Material:Plastic Package Contents: 1 * Remote Control 1 * Cable Connector 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.