1WITH LIGHT SENSOR: Chicken coops door features a light sensing mode that automatically opens and closes at dawn or dusk with automatic sensing. 2SAFE AND STURDY: Automatic chicken coop door is safer and strong enough to resist predators and protect poultry. 3TWO TYPES OF POWER SUPPLY: Solar chicken door supports AA battery or energy saving solar panel power supply, making it more convenient to use. 4APPLICABLE OBJECTS: Automatic chicken door is suitable for all sizes of chickens and ducks, bringing convenience to your poultry's life. 5PREMIUM PLASTIC MATERIALS: Solar powered chicken door is made of premium plastic material, safe and durable, light weight and easy to use.Item Type: Automatic Chicken Coop DoorMaterial: PlasticApplicable Objects: Chicken, Duck, GooseProduct Size: Approx. 35x24.2cm / 13.8x9.5in, After The Chicken Coop Door Open: Approx. 25x20cm / 9.8x7.9inHost Battery (Shipped without Batteries): 3 x AA Dry Cell Or LR06 Alkaline Type BatteriesSolar Panel Battery (Shipped with Built In Battery): 18650 Model, Lithium Ion Battery, 1200MAHChicken Coop Door Power Supply: AA Batteries Or Solar Panel Power Supply Either One Of TwoControl Function: Light SensorGross Weight: 773g/27.3oz1 xAutomaticChickenCoopDoor9 x Screws1 x Solar Panel1 x Solar Panel Accessory Rod1 x Instruction Manual1. Solar panel style random, screw more than counted as a gift.2. Please allow some error due to manual measurement.