Photoelectric Sensors (Fiber Optic, Block Style): Type - Photoelectric Thru-Beam Sensor Pair; Sensing Range - metric - 20m; Sensing Range - standard - 66 ft.; Voltage - 20-250VAC; Output Mode - Light Operate; Connection Type - Connector, 4-pin Micro AC; Connection Size - 1/2-20UNF; Construction Style - Compact, Threaded Nose; Sensing Position - Side; Beam Type - Infrared; Response Time - 16ms On/8ms Off; Sensor Material - Plastic; Enclosure Rating NEMA - NEMA 6P; Enclosure Rating IEC - IEC IP69K; Temperature Rating - -40 to 70degC (-40 to 158degF); Manufacturer Series - T18 Series