The SM312C2QD is a compact infrared photoelectric sensor from Banner Engineering's Mini-Beam series, featuring a 43mm detection range. It operates with 10-30 VDC input voltage and provides both PNP and NPN bipolar outputs. The sensor comes with an M12 4-pin connector, LED indicator, and maintains reliable performance in temperatures ranging from -20 to +70°C. Its IP67-rated enclosure ensures durability in industrial environments.