These photoelectric sensors provide the benefits of IO-Link with a detection range of up to 20 m. They offer three optical operations: a diffuse sensor, a retroflective sensor and a through-beam emitter and receiver. Each is rated IP67 and IP69K and also is Ecolab-approved. Their highly visible red light with large light spot (an inch square at 1 m) makes them simple to set up and easy to align. The diffuse version can detect objects up to 1 m, the retroreflective version up to 8 m and the through-beam has up to a 20-m range. Adjustments are easy via a potentiometer.