Take convenience and safety to a whole new level with the LiftMaster® 8550. The reliable, integrated Battery Backup System guarantees access in and out of your garage, even when the power is out. The safety and security features will continue to operate as well, ensuring your family is protected in a power failure. The opener is also equipped with built-in MyQ™ technology, enabling you to close your garage door or turn lights on or off using a smartphone or computer – from anywhere in the world. And because it features soft start and slow stop to reduce noise when it operates, it is perfect for homes with a room above the garage.   485LM 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)

8550 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
  

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

Warranty

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

Included Accessories

Liftmaster 8550 Side DC Motor Battery Backup Belt Drive Instruction Manual

	Sanford Suggestions: - Sanford and Son suggests the following related items

	Liftmaster 815LM Motion-Activated Solar Light The Liftmaster 815LM Motion-Activated Solar Light Price: $ 124.99 Liftmaster 823LM Remote Light Switch Liftmaster 823LM MyQ Security +2.0 Remote Light Switch Regular Price: $ 37.99 Sale Price: $ 36.49 You Save: $ 1.50 Liftmaster 828LM Security +2.0 Internet Gateway Liftmaster 828LM MyQ Security +2.0 Internet Gateway Regular Price: $ 50.99 Sale Price: $ 38.49 You Save: $ 12.50 Liftmaster Chamberlain 877MAX Keyless Entry Pad Liftmaster Chamberlain 877MAX Keyless Entry Pad Regular Price: $ 44.99 Sale Price: $ 27.79 You Save: $ 17.20 Liftmaster 890MAX 3-Button Mini Remote Control Liftmaster 890MAX 3-Button Mini Remote Control Regular Price: $ 32.50 Sale Price: $ 20.49 You Save: $ 12.01 Liftmaster 895MAX 3-Button Remote Control Opener Liftmaster 895MAX 3-Button Remote Control Opener Transmitter Regular Price: $ 42.95 Sale Price: $ 28.99 You Save: $ 13.96