Installing a Liftmaster 8500 Garage Door Battery Backup

When in Battery Backup mode, wireless MyQ® devices and Timer-To-Close will be disabled. If the optional Battery Backup is part of this installation it should be installed at this time. The Battery Backup can be mounted to either the ceiling or a wall within 3 feet (.9 m) of the garage door opener.

Linear LDCO850 Door Opener

The smart operator with an ultra-quiet, energy-efficient, DC-powered motor that runs at an AC-equivalent speed. Linears smart technology provides monitoring and control anytime, anywhere with Wi-Fi connectivity. Smooth, quiet, long-term reliable. Included Battery Backup for peace of mind, plus smart wall station and three-channel transmitter.  WARNING: This product can expose you to chemicals including 1,3-Butadiene,…