It is compatible with RC model car. The control panel can connects to one set or two sets of light. With mini size and lightweight, it won't add extra burden on RC car. After connecting connector to the receiver third channel(CH3), you can control the light freely. When plug a RC light also powered by receiver, there is a boost regulator which can power 5mm LED light. Name: RC Light Control Switch Input: 6V/1A Weight: 10g Connect Cable Length: 22cm colour:black&green Material:Composite material Package Contents: 5 x Light Control Switch Only the above package content, other products are not included. Note: Light 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.