swing door opener HF-BK AC 220V,110W, 1,400rpm,Max. arm length:2500mm, ... Thrust:1500N,Max. arm weight:300KG swing door opener HF-BK-AOutput :220V50HZMotor Power: 110Wspeed of Motor: 1,400rpmThrust:1500NOpening ... of power failure8) Extremely silent9) Easy installation swing door opener HF-BK