Features: 1.Light Sensor: This automatic chicken coop door is designed with light sensor system which opens the door at dawn and closes at dusk. 2.Easy Installation: This chicken coop door opener can be easily installed within 10 minutes, assembly is not required, you just need to install it in the right place. 3.Battery Powered: This auto chicken coop door is powered by 3 pieces of AA lithium batteries(batteries are not included). No complex wiring means a lower risks of default. 4.Durable Material: This automatic chicken door is made of premium plastic material, strong and highly durable, explicitly designed for the external environment. 5.Time Saving: This chicken door opener is designed for every chicken breeder. An automatic chicken door eliminates the need for you to manually open and close the coop door every day, especially during early morning or late night hours. specification:Item Type: Automatic Chicken Coop Door Material: Plastic Battery Type: Lithium Battery Battery Material: AA (battery not included) Number Of Batteries: 3 PackageList:1 x Automatic Chicken Coop Door 1 x User Manual 8 x Screw