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 Phillips 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: ABS Color: Shown on Picture Voltage: 9 - 16V Current: ≤ 30A Size: Approx. 17 x 14.5 x 5 cm / 6.7 x 5.7 x 2 in