Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Retroreflective Polarized; Sensing Range - 12 ft. (3.5m); Voltage Range - 20-270VAC/DC; Output Mode - Light Operate; Output Configuration - NPN-MOSFET; Connection Type - Connector, 4-pin Micro Pigtail; Connection Size - 1/2-20UNF; Construction Style - Compact, Threaded Nose 18mm; Sensing Position - Side; Response Time - 16.6ms; Beam Type - Visible Red; Material - ABS; Enclosure Rating NEMA - NEMA 6; Enclosure Rating IEC - IEC IP67; Temperature Rating - -13° to +131°F (-25° to +55°C)