The moisture meter can quickly measure the moisture content of the grain. 1. Safe and harmless: These automatic chicken coop doors are very lightweight, easy to use and professionally designed not to cause harm to the safety of pets. 2. Battery Powered: Powered by 3 AA dry batteries (not included), at least one year battery life, you can change batteries within 3 minutes, no need for solar batteries. 3. Easy to install: With screw fittings, easy to install, the installation door does not take more than 10 minutes, no complicated wiring or cables, convenient and fast. 4. Sensitive light: Easy to program, the button opens and closes automatically according to the light, opens automatically in the morning and closes at night. 5. High-quality material: Our chicken house doors are made of high-quality plastic, safe, wearable and durable, and can work in all conditions. Specification: Item Type: Chicken Door Material: Plastic Application: Light Sensing Automatic Chicken Door Battery type and quantity: 3 x AA dry battery (supplied without battery) List of packages: 1 x Chicken Coop Door4 x Screw1 x User Manual