1、SAFE ACCESSORIES: Aluminum alloy hinged doors with linear actuators to prevent predators from prying doors at night and taking your chickens away. 2、SENSOR AND TIMER: With reliable light sensor and weatherproof timer, automatically open and close animal cage doors according to your schedule. 3、AUTO OPEN AND CLOSE: When the door is about to close, if there is an object blocking it, it will automatically stop, the door will not close until there is no object, with slow descending speed. 4、APPLICABLE SCENES: Widely used on indoor and outdoor farms and ranches to accommodate chickens, ducks, geese and other livestock with good protection. 5、REMOTE CONTROL: Provide 2pcs remote controls, the maximum remote control distance is 40 meters, which is convenient to control the chicken coop door freely.