AC-300KG-1P shutter door motor

"Hualin" brand electric security rolling door motors are using general AC motor with mature process,stable quality ,reasonable prices. Our products are being sold throughout America,Germany,Thailand, Vietnam, Chile and a host of other countries and regions. Features: 1)Using 220V/380V power supply. 2)In case in the absence of power, a release chain can be operated door manually 3)Limit switch unit enables precise adjustment of door in both up and down positions 4)Electric and manual operation 5)Easy installation, legerity design, stable operation,low noise, small power consumption.