LIFTMASTER model 821LM, MYQ universal controller is a garage door accessory device.
The warranty on the 821LM, MYQ universal controller accessory is 1 year from LIFTMASTER.
The model 821LM, MYQ universal controller is still available.
LIFTMASTER model 821LM, MYQ universal controller accessory brochure in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
liftmaster_821_brochure_14.pdf
(0.31 MB in English) This requires Acrobat 10 or higher