Lifting seat SP100 enables less mobile persons to overcome single, composed or spiral staircase, outdoors as well as indoors. It is installed on the inner side of the staircase (“non-standard” on the outer side) up to 70% slope. The machinery can be used for staircase with width from 750 mm, if other circumstances don’t obstruct. Lifting seat SP100 goes out of lifting platform SP150 and they differ only slightly. Most frequent utilization of the seat is at private persons and where the building conditions are crowded.