The clarke psp105 puddle pump features a 250w motor with auto sensor is ideal for draining flooded cellars sumps etc and clearing spillages thanks to the low 1mm suction depth this puddle pump also features a 3 position auto sensor which allows a remaining water level to be set or can be used as a continuous duty pump without the plug in sensor 250w 230v motor3 position auto sensor allows remaining water level to be setoutlet15quot bsp with non return va