Review on Purple Learn Button Liftmaster Chamberlain Craftsman Garage Door Opener Remote 371LM 950CD ASONPAO (2Pack) by Victor Pinckney

Pros: Easy to program and works flawlessly with my Liftmaster garage door. Cons: Absolutely none! The battery is pre-installed. Press the purple learning button on the door opener, wait until the yellow light on the door opener itself lights up, then press the remote control button within 30 seconds. When you see the garage light flashing, it's done. Click the remote again and your door will open. All this is in the attached instructions. Very easy to understand even for this old man. I'll buy another pair and place them around other entrances in the garage.