... 3)good performance 4)roller shutter ITEM NO.600KG HH-AD24-600 Rolling Shutter MotorMain specifications and technical parameter1 ... (r/min)300KG HH-AD24-300AC 220V±10%/50Hz1753002065500KG HH-AD24-500AC 220V±10%/50Hz2005003435600KG HH-AD24-600AC 220V±10 ... drive motor;·Low noise, small vibration, low consumption;·Light weight, small size, convenient installation, long life and reliable performance ...