Easy to use: easy to program buttons. 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 a solar panel Plug and Play technology: the door can be installed in less than 10 minutes (no complicated wiring or wiring required). Work in extreme weather conditions: waterproof, work in snow, rain and dust of -26 C to 60C (-15F to 140F). All-in-one design - Made in one cast: solid aluminum door and slider. High quality fine paint with powder coating (for outdoor environment). Product Description Description: Light-sensitive automatic chicken coop door for pets. Material: brown plastic Dimensions: 35 x 24 x 3.7 cm Dimensions: 35 x 24 x 3.7 cm Inner carton: 25 x 5 x 36 cm Product weight: 400 g / 480 g with inner carton. Requires 3 AA batteries. Magnet: the motor contains magnetism. Function: light sensor (strong light to open the door), dark to close the door), lift , waterproof (IP44). Package: 1 chicken coop door. Notes: 1. Due to many factors such as brightness and brightness of the screen, color actual project may be slightly different from the color shown on website. 2. Please allow slight size difference due to the measurement data. 3. Dimensions may vary from 1 to 3 cm. 4. When buying clothes or shoes, please measure your size and choose according to our size. The size chart is in the picture.