Which Remote Works With LiftMaster 41A5021
You need a LiftMaster or Chamberlain security plus remote. The door opener remote model number is a LiftMaster 971LM.
How Do I Program a LiftMaster 971LM Remote
Locate the red smart button on the back of the garage door opener. If you have a light cover on the back of the door opener you will need to pop it down. Once you have located your red smart button push it in then let off. Now hold your remote button down until your…