... duty hoist.YSC450 has adopted modular design, frequency control and strong mechanic strength steel, which enjoys merits ... with aluminumrail according to the requirement With frequency control and direct start available Advanced load inspection device, ... Internal2.0-3.2mCar Height, Internal2.0mMotor ControlFrequency Control OrDirect StartingNo. Of Motors2Safety Device TypeSAJ30,SAJ40Power Supply ...