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Liftmaster Belt Drive Model 8155
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1/2 HP Belt Drive Garage Door Opener

Quiet and smooth, yet as tough as a steel-belted tire, the 8155 1/2 HP Belt Drive Garage Door Opener is the perfect choice if you want both quiet and smooth-running reliability, or simply have rooms positioned above your garage. The 1/2 HP heavy-duty motor is equipped with our patented Motor Vibration Isolation System (MVIS®) that eliminates powerhead vibration for reduced noise. It also features a solid-steel T-rail with automatic belt tensioner on the trolley, and an enhanced belt drive system for a more secure belt grip.

This model has earned the Good Housekeeping seal.            

The Smart Garage Door Opener® lets you electronically program security codes from the Multi-Function Control Panel or the powerhead
•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 lights turns on automatically when The Protector System's infrared beam is broken 
•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


Lifetime motor and belt warranty 
1-year parts warranty  

Included Accessories
78LM Wallbutton
Multi-Function Control Panel
Take control of your garage door. This multi-function control panel can open and close your garage door, and turn opener lights on/off from inside the garage. 
3-Button Remote Control
Get additional access and security with our 3-button remote control. Use it to open and close 3 garage doors or gates, or as an extra remote to turn interior lights and small appliances on inside your home.
Openers > Model 8155 Belt Drive
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828LM Internet Gateway
 Connect your garage door opener to the internet, enabling smartphone control.

~Allows you to open and close the garage door or gate from anywhere and control home lighting with a smartphone, tablet or computer.

~Controls up to 16 MyQ®-Enabled devices.

~Easily connects to the home router.

~Login to MyQ.

*Not included with operator purchase.
Liftmaster Contractor Series