Voltage 220V-240V~50H.Input Power 900W.Lifting weight 250kgs(single line) 500kgs(double line). Lifting height 18m(single line) 9m(double line). Lifting speed 8m/min(single line) 4m/min(double line). Upper and Lower Limit device Yes. It's a powerful electric Hoist and efficient lifting solution designed for both light duty and heavy duty applications.