Infrared LED and detector in a variety of housings. Variety of slot widths, depths & mountings. Detector is either a single phototransistor, or a Schmitt-trigger TTL output type Output Device = Phototransistor Number of Channels = 1 Typical Rise Time = 15000ns Typical Fall Time = 15000ns Mounting Type = Screw Mount Number of Pins = 4 Dimensions = 23.75 x 15.62 x 12.95mm Height = 12.95mm Length = 23.75mm Maximum Operating Temperature = +85°C