Затвор двери двигателя

Shutter Door Motor main features: This model shutter door motorcan be operated by electricity and manual,precise limit by limiter controller automatic.operated by manual when out of power,low noise,over heart protection.this type of shutter motorcan lift theroller shutterdoor automatically. 1.Hot structure:using high quality material heat treatment and having the feature of long life. 2.Braking system:select high quality material,friction coefficient is large and the braking position is accurate,smooth and reliable. 3.Transmission system:running with low noise,small power consumption. 4.automatically limiting displacement.