LIFTMASTER model 8500 residential opener is a 3/4hps jackshaft drive. It is part of the elite series. This garage door opener has an dc motor on 110vac. A battery backup is optional. The remotes are rolling code on MyQ. The rail is style is None.
The warranty on the garage door opener is Lifetime on the motor and 5 years on the remaining opener parts from LIFTMASTER.
The model 8500 is still available.
LIFTMASTER model 8500 residential opener owners manual and instructions in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
(5.47 MB in English) This requires Acrobat 10 or higher