... has safety limiter in both up and down directions. MD model electric hoist has normal lifting speed and slow lifting ... 510, 16, 200.5, 1, 2, 3, 510, 16, 20TravellingmechanismTravellingSpeed (m/min)10, 20, 3010, 20, 30Motor (kw)1x0.4, 1x0 ... .8, 4x0.81x0.4, 1x0.82x0.8, 4x0.8LiftingmechanismLiftingSpeed (m/min)87, 3.58/0.87/0.7,3.5 ... /0.35Liftingheight (m)6, 9, 12, 18, 24, 309, 12, 18, 24, ...