Features:The headlights, general lights and other external lights are automatically controlled according to the brightness of the outside of the body.The automatic lighting response is fast <1 second, and it is stable and does not strobe in various light brightness environments.Night automatic mode, tunnel automatic mode, underground garage automatic mode, headlight automatic shutdown mode.One button manual/automatic, press the switch in the photo sensor, the button pops up/in, indicating that the auto headlight on mode is turned off/on.The light sensitivity can be adjusted to adjust the sensitivity of the light sensor based on the individual's perception of light. (When adjustment is required, a screwdriver can be used to insert a clockwise or counterclockwise slow adjustment in the hole of the main unit)It is suitable for various models of 12V and offers a variety of installation methods.Specifications:Material: ABSColor: Shown on PictureVoltage: 9 - 15VCurrent: ≤ 30ASize: Approx. 17 x 14.5 x 5 cm / 6.7 x 5.7 x 2 inPackage List:1 * Main Controller1 * Power Cable1 * Headlight Cable1 * Switch Cabele1 * Instruction Manual2 * Strap1 * Double-sided Stickers.