Shell: made of die-cast aluminum alloyYL112, light but hard. The integral enclosed structure is applicable interrible environment. 
The motor adopt the Side Magnetic SeriesYEP Braking Motor.

Gear：it is made ofalloy steel by carburizing quenching treatment, and the accuracy lever reachesISO7 under the fine rolling process. Thus transmission with low noise and highefficiency is guaranteed.

Inverse phase sequence protecting device: It is the special electrical installation which controls thecircuit not to work in case of wiring error in the power supply.

Limit switch: The upperlimit switch can automatically power off when upper limit is reached, so as toensure safety by preventing the chain from running out of range.

Rated Voltage:i 24V/36V.

Side Magnetic Braking Device: It allows instant brake as soon as the electric power is cut off.

Chain bag: It is light, attractive and durable.

Chain: It shall adopt theimported FEC80 ultra heat-treatable alloy steel chain.

Hook: It is hot forgingwith perfect strength that is hard to break. The operation safety of the lowerhook is ensured by its 360 degrees rotation and safety tongue piece