940D-01 Chamberlain Compatible Replacement
Wall Mounted Wireless Keypad.
The new compatible GD-R21 wireless keypad is designed to work with openers that utilize purple learn buttons for programming the keypad code. This convenient keypad allows you to open or close your garage door without the need for a remote control or key. It operates by using a private 4-digit code that you can program directly into the device.
Included with this order are the compatible wireless keypad, mounting screws, a battery, and programming instructions.
We process orders on the next business day and offer a 30-day return policy for your convenience.
940D-01 Compatible Replacement Keypad Programming Instructions.
Programming Instructions for PURPLE Learn Button Openers.
To deactivate any unwanted or lost remote, first erase all codes: Press and hold the “learn” button on motor unit until the learn indicator light goes out (approximately 6 seconds). All previous codes are now erased. Reprogram each remote and keypad that you wish to use still.