type:ME300D roller shutter driver, suitable for all kinds of roller shutter door, reliable performance, stable and safety; Roller shutter driver ME300D,single-plase,chain-device ... ,stable and safety3.location accuracy less than 1.5centimeter4.roller shutter door may be opened and closed by remote controller5.Control ... .9540D:single-phase S:three-phase Kalata ME300D roller shutter door motor