... close, allowing people and/or equipment to move quickly through the opening. 1.Control systemsJapanese Mitsubishi Inverter, PLC and other ... reducer,0.75-2.2KW, according to the size of the door to select the model.two brand for choice,SNMA or SEW ... door,it bound up automatically. Secondly,at the bottom of our door,there is photoelectric sensors,as you obstruct the infrared ray,it stop. Thirdly ...