Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Retroreflective Polarized; Sensing Range - 20ft (6m); Voltage Range - 20-250VAC; Output Mode - Light Operate; Output Configuration - SPST Solid State Switch; Connection Type - Connector, 4-pin Micro AC; Connection Size - 1/2-20UNF; Construction Style - Rectangular, Threaded Base; Sensing Position - Side; Response Time - 16ms; Beam Type - Visible Red; Material - Thermoplastic; Enclosure Rating NEMA - NEMA 6P; Enclosure Rating IEC - IEC IP69K; Temperature Rating - -40 to 70degC (-40 to 158degF)