LIFTMASTER model 2255, 2255M residential opener is a 1/2hp chain drive. It is part of the contractor series. This garage door opener has an ac motor on 110vac. A battery backup is not available. The remotes are rolling code on 390. The rail is style is Solid T.
The warranty on the garage door opener is 4 years on the motor and 1 year on the remaining opener parts from LIFTMASTER.
The model 2255, 2255M is discontinued.
LIFTMASTER model 2255, 2255M residential opener owners manual and instructions in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
liftmaster_2255_om.pdf
(2.09 MB in English) This requires Acrobat 10 or higher