Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Retroreflective Polarized; Sensing Range - 68.89ft (21m); Voltage Range - 12-240VAC/DC; Output Mode - Light/Dark Operate; Output Configuration - SPDT EM Relay; Connection Type - Terminals; Connection Size - PG9; Construction Style - Miniature Rectangular; Sensing Position - Side; Response Time - 20ms; Beam Type - Visible Red; Material - ABS; Enclosure Rating IEC - IEC IP67; Temperature Rating - -40 to 60degC (-40 to 140degF)