Easy to use use: easy-to-use buttons; program. It automatically turns on in the morning and turns off at night. You can set a timer or use the built-in light sensor. (LUX). Requires 3 AA batteries, can be replaced in 3 minutes without solar panel (package not included) Plug and Play technology: the door can be installed in less 10 minutes (no complicated wiring or wiring needed). Working in harsh conditions extreme weather conditions: waterproof, working in snow, rain and dust from -26°C to 100°F. 60°C (-15°F to 140°F). All-in-One Design - Manufactured in a single molding: door and slider in solid aluminium. High quality fine paint with powder coating (for outdoor environment).