Compared to conventional LED diffuse sensors, professional laser models feature improved accuracy. As a result, the professional switch point of the new Contrinex devices can be accurately set at any point within the whole setting range of 40 ... 250 mm or 60 ... 600 mm. The narrowly focussed laser beam permits the detection of smallest objects (down to 0.1 mm). The diffuse sensors are built into M18 stainless-steel housings and offer long operating distances of 250 mm or 600 mm as well as high switching frequencies of 5 kHz or 1 kHz.