The LiftMaster 8550WLB is smooth, powerful and Connectable. This operator comes with a built-in battery backup so you won't be left out of your garage in a power outage. Quiet performance with superior lifting power is one of the many reasons this opener is a big seller. This unit has WiFi connectivity and can be used with the free MyQ® app to close or open your garage door from anywhere! For a full list of features and specifications click on the 8550WLB opener picture below to view and print the brochure. Please contact us with any questions you may have, we're here to help!