Thru-beam sensor (pair) OBE20M-R100-S2EP-IO-V31-IR, Emitter, Thru-Beam Sensors, Miniature design with versatile mounting options, IO-Link interface for service and process data, Various frequencies for avoiding mutual interference (cross-talk immunity), Extended temperature range-40 ?°„C ... 60 ?°„C, High degree of protection IP69K, Full metal thread mounting, Not sensitive to ambient light, even with switched energy saving lamps