... "kalata" 300kg roller shutter motor,single-plase,light series,complete function,small volume,light quality,may be used ... location accuracy less than 1.5 centimeter4.roller shutter door may be opened and closed by remote control Technical ... power(w)Rated voltage(v)Tubular diameter (mm)Rated speed(rpm)Rated torque(N.m)M300D300250220145.6170M300S3002503801145.6170M400D4003002201404.5280M400S4003003801404 ...