The electric wire rope hoist have features of compact, light, small-sized shape and smooth operation. It can be uesd not only on the overhead reils, but also be uesd in construnction with many types of electric or manual cranes such as the single-grider crane, the double-grider crane, the cantilever crane and the gantry crane. The eletric hoist model MD1 with double lifting speeds should be used in case where the hiost model CD1 can not meet the requirements for fine abjustments during precision operations.