Order the Chamberlain Liftmaster 377LM if:
You find PURPLE learn button on motor head under light cover
Compatible remotes: 371lm, 372lm, 373lm, 374lm; Mini remote:370lm
Keyless entry includes: Battery installed, installation instructions, mounting hardware (2x wood screws).
(If learn button is redish orange on Chamberlain opener, need 976LM/977LM)
Item# : SPM6729433807
Model # :