Model 8550

MODEL 8550
Elite Series® DC Battery Backup Belt Drive

RAIL SIZE AVAILABLE:  7’, 8’ & 10’

Battery Backup Features:

  • 12VDC battery is always charged and ready
  • Simple battery installation (through the access door behind the light lens)
  • Audible signal alerts you when the battery is in use
  • Safety and security features still operate, ensuring your family is still protected in a power failure
  • Backup power will operate the garage door opener for 40 full cycles within a 24-hour period* (fully charged batteries at 72º F)

Standard Features:

  • Ultra-quiet DC motor belt drive system is durable and maintenance-free
  • Energy-efficient operation consumes up to 75% less power in standby mode
  • Equipped with MyQ® technology that lets you monitor and control your garage door and house lights remotely by using a computer or smartphone
  • Enclosed gear case provides continous lubrication for longer life and smoother operation
  • One-piece solid steel T-rail with automatic belt tensioner on trolley
  • Internal electronic limit settings and electronic/internal force sensing
  • Auto force – the garage door opener adapts to weather and changing environmental conditions, meaning less maintenance required
  • Timer-to-Close allows the door to automatically close after a pre-programmed number of minutes
  • The Smart Garage Door Opener® lets you electronically program security codes from the Smart Control Panel® or the powerhead
  • Quick-Connect™ terminals for faster wire installation
  • 200 watts of light with adjustable light time delay; dual non-yellowing hinged light lens for easy bulb replacement; CFL bulb-compatible design
  • 6-foot power cord makes connecting to a power source easier than ever; ideal for vaulted ceilings

    This model has earned the Good Housekeeping seal.

Safety Features:

  • The Protector System® projects an invisible light beam across the garage door opening and automatically reverses the door if anything interrupts the beam while door is going down
  • PosiLock® stops intruders by securely locking the garage door when it is down
  • Alert-2-Close warning system provides UL325-compliant audible and visual warnings that the garage door is about to close when using the Timer-to-Close, or remote closing features (Alert-2-Close applications are for sectional doors only; not one piece doors)
  • Manual release handle in case of power failure

Included Accessories:

  • 3-Button Premium Remote Control (895MAX)
  • Smart Control Panel® (880LM)
  • Battery Backup (485LM)


  • Lifetime motor and belt warranty
  • 5-year parts warranty
  • 1-year battery warranty (485LM)

To reduce the risk of injury to persons – When the LiftMaster® Internet Gateway is used with garage door openers, the operator must be installed with sectional doors.

This model subject to availability from manufacturer. Manufacturer responsible for any alterations, changes, deletions made respective to this model.