“Turck BI2-G12-AZ33X-B3131 Inductive Prox Sensor – 2 mm Range; Inductive Proximity Sensor w/2 mm Sensing Range, Embeddable, 12 mm Ø Fully Threaded (M12x1) Metal Barrel Housing; 2-Wire, N.O., Self Contained Output, LED (Red): Output Energized; 20-250 VAC, 10-300 VDC Voltage Range; microfast 1/2-20 UNF Connector”