Security+® rolling code technology that sends a brand new code every time it is used.
Operates one garage door.
One 5-year 3-volt battery included.
Compatible keypad: 976LM/977LM
The Liftmaster 971LM is compatible with:
LiftMaster®, Chamberlain, Master Mechanic, Wayne Dalton, and Sears Craftsman garage door openers(390Mhz Frequency only) with a remote/motorhead that has a SECURITY+ logo AND a redish orange learn button under the light cover of the motor head or a Chamberlain garage door motorhead that has a gray antenna.
The 41C4220A is comptabile with: Liftmaster Sears Craftsman Chamberlain Access Master and all other Chamberlain Chain Drive Units manufactured after 1984. You can find the manufacture date on the back of your motor unit.
Not sure if your garage door opener is compatible with the 41C4220A? Check the manufacture date on your motor head. Does your current chain drive gear have a diameter of 2 3/4" and a bore diameter of 1/2"? Does the sprocket assembly look the same?
41C4220A includes: Sprocket and drive gear, worm gear, grease, replacement bearings, and instructions.