Related Articles. The belt drive system works in tandem with a DC motor to make it virtually silent. Some of them are: Almost all the Liftmaster models are equipped with MyQ technology. If you seek comfort, peace, and quiet then consider getting the LiftMaster 8550W. With that, it is easy for you to access & control the device from the smartphone/ tablet. Just because your garage door rattles and whines whenever you open it doesn’t mean you have to get used to it. LiftMaster 8550W garage door opener engineered for performance, designed for comfort, and built to last. LiftMaster 8550W Opener. LiftMaster Garage Door Opener Models 8550W, 8550WL, 8550WLB, 8550WLB-267, 8557W, WLED, WLED-267, 85503, 85503-267, 8587W, … Compatible accessories for myQ™/Sec+2.0 enabled garage door openers Confused about Liftmaster 8550 vs. 8550w, Check the Liftmaster 8550WLB Garage Openers benefits & better features. LiftMaster 8550W, 8550WL, 8550WLB, 8550WLB-267, 8557W, WLED, WLED-267, 85503, 85503-267, 8587W, 8587WL, 8580WLB Owner's Manual LiftMaster 8550W, 8557W Owner's Manual - Spanish Wi-Fi Garage Door Openers FAQs Combined with seamless welding belt drive rail, the LiftMaster 8550W garage door opener delivers powerful and ultra-quiet performance. It brings the latest technology to the durable and productive 900 Newtons (equivalent to 3/4HP) DC, P3 motor.