Liftmaster 3850
           DC Motor Belt Drive with Integrated EverCharge Standby Power System
Liftmaster 3580


Now when the power goes out, your garage door opener will still work. The LiftMaster® 3850 is the only 3/4 HPS* professionally installed opener with a fully-integrated standby power system. It will operate the garage door opener for 40 cycles within a 24-hour period, and recharges automatically when the power comes back on; an audible signal tells you when the power is out and the EverCharge® Standby Power System is in use. The safety and security features will continue to operate as well, ensuring your family is protected in a power failure. The opener also features smooth start and smooth stop to reduce the noise of the garage door as it opens and closes – perfect for homes with a room above the garage.

* horsepower strength with same lifting force specifications as 3/4 HP LiftMaster garage door openers

  • +Auto-force feature constantly monitors garage door system and adjusts forces to temperature fluctuations, floor height, and door track movement 
  • +The Smart Garage Door Opener® lets you electronically program security codes from the Smart Control Panel™ or the powerhead
  • +Enclosed gear case provides continuous lubrication and protection for longer life and smoother operation
  • +A 6-foot power cord makes connecting to a power source easier than ever
  • +Delivers 200 watts of light with adjustable light time delay
  • +Meets all UL325 requirements


  • +The Protector System® safety sensors project an invisible light beam across the garage door opening and automatically reverse the door if anything interrupts the beam while the door is going down
  • +Sensing technology will stop the door from closing if contact is made with a person or object
  • +Opener light turns on automatically when The Protector System's infared beam is broken
  • +Patented technology detects when a door spring breaks and triggers the motor to reverse the door to the full open position
  • +Security+® rolling code technology assures a new code is sent every time the remote control is used
  • +Patented PosiLock® system ensures the door remains securely locked when the garage door is closed
  • +Manual release handle in case of power failure