1)Roller shutter opened and closed by the power-driven operation.

2)Limit switch unit enables precise adjustment of door in both up and down position .

3)In case in the ansence of power ,a release chain can be operated door manually.

4)Powerfull strengh ,overheat protection when overloaded.

5)One-phase rolling door motor has the capacitance automatic discharge device for security overhaul.

6)Easdy installtion ,Low noise,small power consumption