Automatically. Open the door and light on the light. Close the door and turn off the light. First 6 seconds "rapid flash" mode, best warning to the rear of the car.Automatic power off after 110 seconds.
Easy Installed. It is only necessary to paste the light and the magnet to the corresponding to both sides of the gap of the door.NO wiring, NO drill.No external wire, just paste on to your car door easily.
This product applies to ALL models of cars. Based on the original car door data, it has been tested by various models and will not affect the opening and closing of the car door. Not just cars, you can use it anywhere.
New LED technology anti-collision lights, build in high-tech component sensor, long service life.
Powered by button battery, easy to replace with CR2032 button battery by yourself.
When the door is opened, the warning light flashes rapidly, warning the rear vehicle to avoid accidents and collisions when the light is dim.