If you're looking for an automatic chicken coop door that is high quality and practical, the Chicken Pets Dog Door is the perfect option for you. This door is equipped with a light sensor, so it will automatically open and close to keep your chickens safe at night and during the day. The installation process is quick and easy, taking no more than 10 minutes, and the door has a minimum of 3 year battery life, so you can rest assured it will work in all conditions.