Universal Garage Door Opener Keypad for Liftmaster Chamberlain Craftsman Wayne Dalton Openers Produced Since 1993, Wireless Keypad Keyless Entry, Replaces 877/878MAX 377/977/877/66LM, Safe Security

I just replaced mine with this (https://www.amazon.com/dp/B0CSNG5936?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1) because one of the buttons consistently failed. This one makes a satisfying beep when you touch a button, so you know it registered. Will see if it lasts longer and is easier to maintain.