LiftMaster 041C5500 Wire Harness Kit (Low Voltage) liftmaster 201100T Mechanical lock in the up

Mechanical lock in the up position with special release key (2 keys included)

although a professional installer is recommended

Universal 12V-240V Loop Detector for Gate and Barrier Applications

LiftMaster Q073

LiftMaster 041C5500 Wire Harness Kit (Low Voltage) liftmaster 201100T Mechanical lock in the upLiftMaster 041C5500 Wire Harness Kit (Low Voltage) This is a Low Voltage Wire Harness Replacement Kit. For use with various LiftMaster and Chamberlain Belt Drive and Chain Drive garage door openers. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Genuine LiftMaster replacement part. Also known as LiftMaster 41C5500