Automatically open the function when the light becomes dimmed. Waterproof function: IP66 camera with magnetic base. You can install it directly at the tail of your vehicle, whatever in the sun or the rain. Vehicle Backup Camera System: Made up with a battery powered wireless camera & a 2.5¡± wireless battery powered color LCD monitor with video out. Convenient for you to see what happened at the tail of your vehicle when you are driving or hitching up / backing up.