Happy Henhouse’s chicken coop electric doors are equipped with a battery-powered dusk to dawn light sensor and timer that is built to last. With an easily adaptable set point, the weather-resistant controller offers enhanced functionality and reliable operation of the doors, assuring the chickens are safeguarded at night with a closed door. To know more you can visit us at : https://happy-henhouse.com/products/automatic-chicken-coop-door-opener-kit-light-sensor-battery-operated