circuit board 41A5021 model series for LiftMaster, Chamberlain or Craftsman openers.

It is compatible with double bulb motors chain or belt drive.

Your opener must have a red/orange square learn button and gray antenna.

This works with older motors from 1997-2004.

Replaces parts: 41A5021-A , 41A5021-B , 41A5021-C , 41A5021-D , 41A5021-E , 41A5021-2A , 41A5021-2B , 41A5021-2C , 41A5021-4C , 41A5021-4D , 41A5021-4F,

41A5021-3B

41A5021-5E, 41A5021-5F, 41A5021-5G, 41A5021-5H, 41A5021-5I