High  efficiency,light weight  motor,no  asbestos  brake system,low  energy  consumption.Stamping  Steel  shell lightweight  and  strong.High  strength  safety  hook,bear unexpected overload rush out will not break,just gradually deformation.Light  weight,beautiful  and  durable  plastic chain bag.

Limit Switch:there is a limit switch device hanging upand down,so that the motor automatically stop,anti-prevent chain  fried,to  ensure  safety.Reverse  phase  protection device:special wire device,when the power connection is wrong,the control circuit can notwork