... ~1.5m/s 4.Certificate: ISO9001, SGS Rolling Shutter Door 1. Motor: Taiwan SNMA Brand, ... 75Kw, With Electromagnetic Brake And Deceleration System2. Control System: Frequency Changer Is Japan Yaskawa Brand, 220V, ... Middle; Closed Brush At Two Sides5. Operation System: Based On Wall Switch, (Pull Switch---$90 ... Pair, Infrared Switch---$240/Pair)6. Safety System: USA G-tek Brand, With Infrared Photoelectricity ...