LiftMaster 1-1/4 HPs Belt Drive Opener with Battery Backup and myQ Connectivity 6690L DEALERS NEAR ME Are you a LiftMaster Partner? Login to Purchase. Worry-Free Warranty: Built to last and backed by a lifetime motor and belt warranty for total peace of mind. Battery Backup: With built-in Battery Backup, your garage door continues working - so you're never locked out when it matters most. Ultra-Quiet Performance: Engineered for quiet, these openers are powered by DC motors and reinforced belts that glide the door with minimal noise—perfect for homes with living spaces near the garage. All-Day