This is a receiver with own 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 of wiring. Wide voltage DC3.7V-12V can be used. Input DC3.7V-12V, output DC3.7V-12V,input DC5V, output DC5V,input DC12V, output DC12VWorking voltage: DC3.7V-12V wide voltage (DC3.7V 4.5V 5V 6V 7.4V 9V 12V are all possible)Length: 210mmColor: blackMaterial: plastic+metalConnector size: male and female 5.5 x 2.1mmWorking mode: MOS tube silent and non-contact (control the of the positive electrode VCC + )Frequency: 433MHZStandby & working current: 6mALoad capacity: 3AWeight: 20gCode pairing : The receiver has a learning function, can be equipped with a remote control, and can be set for multiple sets of universalPackage Contents:1 x Receiver A1 x Remote (2 CR2016 button batteries not included)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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.