Thru-beam sensor (pair) OBE25M-18GM60-SE5-V1, Thru-beam sensor (pair), Thru-Beam Sensors, Strong metallic housing in cylindrical shape M18 x 1, Not sensitive to ambient light, Degree of protection IP67, Very high detection range, Extended temperature range-40 ?°„C ... 60 ?°„C, High degree of protection IP69K, Easy to use