LIFTMASTER model 84LM transmitter. It transmits using on frequency 390 MHz. It has 1 button(s).
The warranty on the 84LM garage door transmitter is 1 year from LIFTMASTER.
The model 84LM is still available.
LIFTMASTER model transmitter instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
(0.14 MB in English) This requires Acrobat 10 or higher