For a top quality, practical automatic chicken coop door, the Chicken Pets Dog Door is an excellent choice. You can enjoy the convenience of a light sensor, which opens and shuts the door to keep your chickens secure at any time of day. Plus, installation doesn't take long - 10 minutes or less. For long-term reliability, the door has a battery life of at least 3 years.
Specifications: Name: Automatic Chicken Coop Door Size: about 35x24x3.7cm/13.78x9.45x1.46in Battery: 3 AA batteries (not included) Function: light sensing, liftable, impervious (IP44)