Missing battery cover. Look at the picture that is the item you're getting

The LiftMaster Wireless Keypad 878MAX/877MAX is a battery-operated garage door opener designed for use with LiftMaster and Chamberlain brand garage doors. It features a 30-foot operating range and is powered by a 9-volt alkaline battery. The keypad includes a flip cover for easy access and comes in a sleek gray color. Made of durable plastic, this keypad is universal and easy to use, making it a convenient addition to any garage door system.