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4035 Geraldus Ave, Ste. R
Memphis, TN 38311

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LifeMaster Elite Series® DC Battery Backup Belt Drive

The LiftMaster® 8550 garage door opener provides optimal security and convenience for you and your family. If you are concerned about noise, you will appreciate this model’s quiet soft-start and slow-stop operation which makes it ideal for garages located under or near living quarters (such as “mother-in-law apartments”). In the event of a power failure, you can depend on this door opener’s built-in battery backup that ensures the door (including its safety and security features) will function normally. For additional convenience, the LiftMaster® 8550 features MyQ® technology, which allows you to access the mechanism via computer or smartphone, so you can close the garage door and turn your lights on and off from any location worldwide.

  • Equipped with MyQ® technology that lets you monitor and control your garage door and house lights remotely by using a computer or smartphone (LiftMaster® Internet Gateway accessory required)
  • Timer-to-Close feature allows the door to automatically close after a pre-programmed number of minutes
  • 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 continous lubrication for longer life and smoother operation
  • A 6-foot power cord makes connecting to a power source easier than ever
  • Whole-garage lighting with adjustable light time delay; compatible with CFL bulbs
  • Energy-efficient operation consumes up to 75% less power in standby mode
  • HOMELINK® compatible with QuickTrain™ technology
  • Meets all UL325 requirements


LifeMaster Elite Series® DC Battery Backup Belt Drive

LifeMaster Elite Series® DC Battery Backup Belt Drive

  • The Protector System® safety sensors project an invisible light beam across the garage door opening and automatically reverses the door if anything interrupts the beam while door is going down
  • Sensing technology will stop the door from closing if contact is made with a person or object
  • Opener lights turn on automatically when The Protector System’s infrared beam is interrupted
  • Security+2.0™ rolling code technology eliminates frequency interference and assures a new code is sent every time the remote control is used
  • Patented PosiLock® system ensures the door remains securely locked when it is closed
  • Alert-2-Close warning system provides audible and visual warnings that the garage door is about to close when using the Timer-to-Close or remote closing features
  • Manual release handle in case of power failure


  • Lifetime motor and belt warranty
  • 5-year parts warranty
  • 1-year warranty on Battery Backup Battery

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.



  • “Will work without power.Love that it comes with the battery. Usually that sort of accessory is an option, with an upcharge.” – ARAT

No. 8550 Elite Series with DC Battery Backup

  • “We had three of these openers installed on W 8/20/14 as the gears on our prior chain driven models were wearing out at 15 years old. The new LiftMasters are much quieter and operate very smoothly. I like the automatic lights-on with motion in the garage feature. I also like the outside remote keypad for which the “Enter” button only (no code required) need be depressed when wanting to close the door. I like these openers a lot!” – GregG

The Best!

  • “Very quiet and battery back up. So far not a problem very quiet it been almost a year.” – Bryan

Great Opener

  • “Quiet, reliable, my q is a plus, battery backup. I’ve had this opener for about a year and have been pleased with it. It’s very quiet and reliable. The battery backup I haven’t needed yet but I did test it and it worked great. The MyQ wireless opener sold separately works well too. I had it professionally installed so I can’t say how easy or hard it is to install but it only took about an hour for them to do it.” – glock1963

Best Garage door motor ever!

  • “It was a great price and has great features. And is so quiet.” – FLHR

Really Like It!

  • “Just had the Liftmaster 8550 installed, replacing a 13 year old one that had a cracked gear. I really like how quiet the Liftmaster is and the technology that comes with it. I am especially pleased that they are sending me the Repeater Kit for free. I pay only the shipping of $7.00. My 2012 KIA Soul qualified for this. Thanks Liftmaster.” – Georgetown

Best money I’ve spent on the garage…

  • “I previously owned an Overhead Door opener and it was chain driven. It was very noisy when coming home at 4am from work and always woke the family up. My new Liftmaster 8550 is VERY quiet and the internet gateway is an awesome feature. LiftMaster definitely hit a home-run with this cool feature. I really like all of the capabilities of the 8550 and can’t wait to use them! Huge kudos to “Fletcher” with Windsor Door for the install. He was very professional and informative about all of the new features. GREAT SERVICE!” – Anthony

MyQ Garage enables smartphone control of most major garage door opener brands and gate operators with Photo Eyes.