LIFTMASTER/CHAMBERLAIN KEYPADS
How to set my keyless entry to close the door using one button
Some keyless entry keypads have a feature called “one button close”. Your garage door opener can be closed by pressing only the ENTER button on the wireless keypad when the one button close feature has been activated. For security reasons, this does not work in reverse to open the door.
This feature can be activated and deactivated by pressing and holding the numbers 1 and 9 simultaneously for 10 seconds. The keypad will blink twice when the one button close is active. The keypad will blink four times when one button close is deactivated.