Liftmaster SW2000 B3

The brawny design supports gate lengths up to 20 feet and gate weights up to 800 pounds. Cold rolled steel chassis, temperature-resistant gearbox, and spin-molded ABS plastic housing ensure rugged, reliable performance. Quick-disconnect arm, access door, and intelligent obstruction sensing are all standard features. STANDARD FEATURES (Supported by B3 & X3 models) Built-in Radio Receiver Inherent obstruction sensing External obstruction sensing Maglock control Control inputs Anti-tailgate (ATG) suppression Quick-release manual disconnect system Single/dual gate operation Tandem gate operation Dynamic braking Timer to close Maximum run timer LED indicators Limit switches Spike & surge protection Access Door Terminal wiring 3 year warranty