Designed for long-term use: Chicken coop door openers are designed for long-term use. There are no wires or cables, and the opener is powered by 3 AA batteries (batteries not included). No complicated wiring means low risk of fault. Plus, coop door openers are made of professionally painted plastic. Easy to Install and Configure: The concept of automatic chicken coop doors is for the convenience of our valued customers. The battery compartment is located on the surface of the drive system, eliminating the need to remove the coop to replace the battery.Multi-Mode for Multi-Scenario Use: The new generation of door openers have three basic modes: light sensor mode and manual mode. Different modes can work together. Automatic chicken coop doors fit any scene. Protection program: The chicken coop doors have a protection mechanism. the door hits the chicken, it stops automatically. Don't worry about hurting your cute chick. Note: The data is all manual measurement, please allow 1 - 3cm error, due to the light and display difference, it there will be some color difference, depending on the physical object received Delivery Quantity: (according to the main picture)