LIFTMASTER model 387LM UNIVERSAL keyless entry. It transmits using billion code on frequency 300.
The warranty on the 387LM UNIVERSAL garage door keyless entry is 1 year from LIFTMASTER.
The model 387LM UNIVERSAL is still available.
LIFTMASTER model keyless entry instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
liftmaster_387lm_om.pdf
(0.22 MB in English) This requires Acrobat 10 or higher