LiftMaster 3280 - Our best seller. Features Quiet operation, Muti-Function wallbutton. AC motor with lifetime warranty

LiftMaster 3850 - Our best Trolley operator. Uses a DC motor for soft start and stops. Opens faster than the 3280, and Quieter as well. The gears are enclosed and permanently lubricated. Battery backup powers the door when power is out. Wallbutton has Time, Temp, Diagnostic Display, and motion sensors to turn the lights on.