Batteries Not Included 1:Easy installation, Our chicken door comes with detailed instructions. The all-in-one design allows you to install it on the chicken coop quickly. No complicated wiring or cabling, battery powered with low battery warning. 2:Super upgraded circuit board system, only need 3 AA ordinary batteries, can be used for 1 years, we are also equipped with a low battery alarm function, when the battery power is lower than 30% (4V), the indicator light keeps flashing to remind you Replace the battery in time 3: Our automatic chicken coop door openers consist of high quality circuit boards and high quality motors with antifreeze added to work well even in extreme weather and can withstand temperatures from -22F to 131F 4:Our automatic chicken coop door has a built-in sensor, it will stop automatically once it touches chickens, and prevent the door from hurting the chickens. 5:Our auto chicken coop door not only creates a safe home for your chickens but also saves you time, which is very convenient for poultry farmers