Keep your chickens safe and happy by installing a battery operated chicken coop door only from a family-owned and operated business. Happy Henhouse, located in Missouri is a leading company for automatic chicken coop doors. Our weatherproof controllers are powered by batteries and use a heavy duty gear motor, timer, or an adjustable light sensor to allow sunlight to activate the motor, permitting the easy-to-use chicken coop door to open and close automatically with time or the sun. The controller with dusk to dawn light sensor and timer is powered by 4 AA alkaline batteries that last approximately 6-12 months or more. If you have chickens, install one right away to forget about the hassles of rushing home in the evening or getting up early in the morning to keep your chickens safe and secure. To know more you visit us at : https://happy-henhouse.com/products/automatic-chicken-coop-door-opener-kit-light-sensor-battery-operated