The LiftMaster 41ac050-1 logic board is for models 2005-current, 315mhz, 1/2 hp security + chain drive garage door openers with no lights
This replacement circuit board, part number 41ac050-1m, fits several LiftMaster chamberlain garage door openers and is identical to earlier circuit boards with the 41ac050-1 part number.
The final letter designates a model year change, so as long as the rest of the part numbers are the same, the circuit boards are interchangeable
A bad circuit board is a common cause of problems with garage door openers, and replacing a faulty board with a new one from north shore commercial door is a quicker and less expensive fix that replacing the entire unit
This replacement circuit board fits the following LiftMaster chamberlain models: 3245 3255 pd210d pd212d hd200d.