Manna Pro provides you with safety at ease! Our Harris Farms Automated Chicken Coop Door is great for flock security and operates on the built-in timer， light sensor， or a combination of both! Adding this door to your coop will allow for uninterrupted evenings and sleeping in on the weekends. Easy to install and powered by 4 AA batteries or a power cord adaptor (batteries and power adaptor are not included). Our Harris Farms Auto Coop Door will also notify you via percentage when battery life is low， so you know when they’re ready to be switched out! Compatible with coop entrances 8 5/8” wide and 9 7/8” tall or smaller and includes the door frame， aluminum door， control box， and screws. Suitable for use in hot summers and cold winters. The Harris Farms Automated Chicken Coop Door also comes with a Limited 1-year Warranty. At Manna Pro， we believe in Nurturing Life. Since 1985 with roots dating back to 1842， Manna Pro has been committed to providing high-quality， nutritionally wholesome feeds， supplements， and treats to your flock at every stage of their lives. As a company comprised of animal lovers， we understand the desire to provide your flock with the very best. Our passion is happy， healthy pets and we are your trusted partner to provide just that.FeaturesAUTOMATED: Automatic Door with 6 Month Battery Life.EASY TO INSTALL: Can be Inside or Outside Your Chicken Coop for Flock Safety.3 MODE FUNCTIONALITY: Three Different Operating Modes: - Timer Only， Light Only， Timer Light.FLOCK SECURITY: Built in Guard Rail to Protect Your Flock from Predators.DURABLE: Weather Friendly – Can Sustain Hot Summers Cold Winters to always protect your chickens. PREDATOR RESISTANT: Keep your flock safe from predators day and night.SpecificationsPowered by 4 AA batteries or a power cord adaptor (batteries and power adaptor are not included).Compatible with coop entrances 8 5/8” wide and 9 7/8” tall or smaller and includes the door frame， aluminum door， control box， and screws.WarrantypLimited 1-year Warranty/p