Universal thru-beam sensor, large housing design, 30 m detection range, red light, 25 kHz transmission frequency, light/dark on, DC version, NPN output, PNP output, test input, pre-fault output, fixed cable, Universal series with highly versatile fields of use, Resistant against noise: reliable operation under all conditions, Highly visible LED as alignment aid in receiver optics, Emitter with test input, Version with red light