Specification: Item Type: Automatic Chicken Coop Door. Material: Plastic Product Size: about 35x24cm/13.8x9.4in Size after opening the door: about 25x20cm/9.8x7.9in Product: 480g Category: Smart devices Poultry applicable: chicken, duck, goose Battery: 3 AAA batteries (not included in delivery) Function: light detection, flip-up, waterproof (IP44) < p> describe: 1. Light-sensing design, the door automatically goes up when there is light and automatically goes down when there is no light. Generally, it goes up automatically during the day and it goes down automatically after dark. If you want to close it during the day, you need to cover the light sensor by yourself; or manually push the door up when the battery switch is off. 2. Super long battery life, super upgraded circuit board system, only requires 3 ordinary 1.5V batteries (the product does not contain batteries), and can be used for many months. < p>3. Easy to install, just follow the user manual and it can be installed in 10 minutes. 4. Weather resistance and high quality materials, our automatic chicken coop door opener is made of high quality circuit boards and high quality motors with added antifreeze. They are durable, so you can safely use them for years. They perform well even in extreme weather conditions and can withstand temperatures from -22 to 131. 5. We provide customers with professional after-sales service and lifetime technical support, please feel free to contact us. Product selling point: 1. Automatic brightness detection function; 2. Easy to use and operate; 3. Super battery life, only need 3 regular 1.5V batteries; 4. The gravity range of the controller sliding door is: 0.2-0.8 kg; 5. The waterproof level is P44; 6. Manual in English;