1.Worm gear provides durability and silence in motor operation. 2.Clutch device for power failure,use a special key release clutch,operate the gate manually. 3.Stop working when gate meets obstacle. 4.Soft start and soft stop ,avoid some accidents  5.Copper motor and gear worm for stable performance and longer working life  6.Adjustable opening/closing interval between master and slave gate.  7.Adjusting residence sensitivity 8.24VDC Swing gate opener can work for solar power system and back up battery