LiftMaster Model 3900
Light-Duty Commercial Jackshaft Operator for Sectional Doors
Push Button Station: 1-button station for OPEN & CLOSE functions with type B2 control wiring is standard for all operators. Controls with 1, 2 and 3 buttons are available.
The Protector System® Safety Sensors: A “non-contact” photo safety sensor designed to sense an obstruction and signal the door operator to reverse to open.
Warranty: Lifetime motor warranty.
Power Door Lock: Prevents the door from being manually forced open once fully closed.