The main parameter:
Power supply(V/Hz):220/50
Motor power(Kw):0.37
Max.lifting force(Kg):300
Drum diameter(mm):Ø140
Drum speed(R/Min):9.25
Max.hoisting height(m):4.8
Deadweight lowering weight(Kg):12
Gear ratio of big and small chain wheels(gears):30/9
Specification of bushroller chain:10A-1-56
Weight of main engine(Kg):13.5

1. press button operation, power-driven make shutter open and close,limit switch can control stroke accurately.
2. while no power-driven, pull the hand chain, the doors can be move up slowly, pull down the auto chain , the door can move down auto .
3. With remote control and password button,they can make the doors opened and closed.
4. With fire-proof electronic control boxes and smoke control and the temperature probe sensor, they can detect the fire, the smoke, meet the performance load GB14102-93 standard.
5. With different emergency doors settings,it can close the doors when no power and nobody