Feature:STRONG COMPATIBILITYKeyboard lock is compatible with all liftmaster garage door openers, suitable for 877max, 878max garage doors. Set a password and then press the correct button each time to get in.WATERPROOF AND BACKLIGHTGarage door keypad is designed with a flip-lip cover, which can keep out the rain and can be used normally in rainy days. And the keyboard is backlit for easy reading even in the dark.WIRELESS DESIGNThe product is powered by 1 x 9V battery(not included) to avoid the trouble of charging. Wireless design, you can open or close your garage door easily, which not need to use a remote control or key.STURDY MATERIALThe garage door lock is made of ABS plastic material, featuring high toughness, wear-resistant, weatherproof, sturdy and durable. It is effectively waterproof, anti-aging and not easy to fade.EASY TO INSTALLEquipped with manual and screws, it has no complicated wiring, easy to install, saves time and effort. Ensure the garage door is closed, then quickly start to program the keypad.Specifications:Color: GreyMaterial: ABSPower by: 1 x 9V battery(not included)Keypad size: About 16 x 6cm/6.30 x 2.36inch(L x W)Package Includes:1pc x Garage door keypad1pc x Manual1pack x Mounting screwNote:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.