LIFTMASTER model 377LM keyless entry. It transmits using rolling code on frequency 315.
The warranty on the 377LM garage door keyless entry is 1 year from LIFTMASTER.
The model 377LM is discontinued.
LIFTMASTER model keyless entry instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
(0.58 MB in English) This requires Acrobat 10 or higher