Now when the power goes out, your garage door opener will still work. The LiftMaster® 8550W 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.
Works with the MyQ app - Includes core features including the ability to check the status, control the door, and get activity alerts from anywhere.
Linking MyQ to partner apps for more enhanced features such as voice control or location based garage door closing may require an accessory purchase or subscription fee. Subscription fee applies after 30-day free trial ends. Visit liftmaster.com/workswithmyq for more details.
All Liftmaster Openers, Operators, and Systems should be purchased through a Dealer and professionally installed.
- MyQ Technology now with Wi-Fi®, lets users receive alerts and open and close the garage door from anywhere.
- MyQ mobile app is a free download requiring no annual activation fee.
- Works with MyQ; core features that allow you to control your garage door from anywhere, get activity alerts and set schedules are included with the MyQ app.
- P3™ Motors provide proven reliability and durability.
- DC Motor Belt System delivers powerful, ultra-quiet performance.
- Battery Backup ensures access to your garage when the power goes out.
Safety and Security
- Automatic Garage Door Lock Capable - deadbolt locks the garage door, making it virtually impenetrable. (2 max., sold separately as 841LM).
- Safeguard your household with Security+ 2.0™ - with every click, a new code is sent to the Garage Door Opener, so the door opens only for you.
- Timer-to-Close automatically closes the door after a pre-programmed number of minutes.
- Alert-2-Close signals when a door is being closed by MyQ®.
- Motion Detector activates the Garage Door Opener's lights as soon as you enter the garage.
- The Protector System® invisible light beam auto-reverses the door if there is an obstruction.
- Smart Control Panel (880LMW) - LCD display enables simple programming and adjustment of settings.
- 3-Button Remotes Control (893MAX) - Operates up to 3 openers or MyQ Light Accessories.
- Integrated Battery Backup (485LM) - Powers up the opener when the power's out.
- Lifetime motor and belt warranty
- 5-year parts warranty
- 1-year warranty on EverCharge® Standby Power System and accessories warranty
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Accessory Compatibility Chart
Garage Door Opener Comparison Chart