The house door opener is equipped with a light sensor, the door automatically goes up when there is light and goes down automatically when there is no light. Generally, it will rise automatically during the day and fall automatically after dark. If you want to close it during the day, you need to cover the photosensitive area yourself. The super-upgraded circuit board system only needs 4 ordinary 1.5V batteries (the product does not include batteries), and the indicator light keeps flashing, reminding you to replace the battery in time to prevent the chickens from feeding normally Our automatic door opener is composed of a circuit high quality printed and high quality engine with added antifreeze. They’re durable, so you can safely use them for years to come. They perform well even in extreme weather conditions, have reliable water resistance, and can withstand temperatures down to -22 °F to 131 °F.Material: Plastic Product size: 35 x 24 x 3.7 cm Inner box size: 25 x 5 x 36 cm