When the power goes out, your garage door opener still goes up. The 8550W has a unique feature that no other system can offer. It's the only opener with the patented EverChargeTM Standby Power built right in to power the opener and all of its safety features when the power goes out..

LiftMaster garage door openers offer safety, security and convenience like:

• Security+® Feature Package with 1 Remote
• 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
• 3/4 HP Ultra-quiet 12V DC motor with belt drive system
• Alerts you when in use - an audible signal tells you when the battery backup system is operating
• Equipped with PosiLockTM -stops intruders by securely locking the garage door when it is down
• Includes 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
• Includes Quick-ConnectTM wire terminals for faster wire installation
• Smart Control PanelTM - displays time, temperature and important system status messages, making it easier to maintain your system. Also turns on garage door opener lights automatically when you enter a dark garage - hands free
• Dual non-yellowing hinged light lenses allows for easy bulb replacement
• Advanced electronics now allow you to open and close your garage door from greater distances
• Manual release in case of power failure
• Lifetime motor warranty
• 5-year parts warranty
• 1-year warranty on EverChargeTM Battery Backup System