How to see the speed of electric hoist?

The sound of the machine is very fast. According to the relevant public information, the lifting speed of electric hoist is fast or slow, and the size gear is switched in the gearbox. Electric hoist is a special lifting equipment, which is installed on crown block and gantry crane. Electric hoist has the characteristics of small size, light weight, simple operation and convenient use, and is used in industrial and mining enterprises, warehouses, docks and other places.