EATON Cutler-Hammer Series Proximity Sensor, 3-Wire Unshielded, Series: E57 Global, Inductive Sensing Method, 3 mm Sensing Distance, <1 % Accuracy, ON/PNP Open Collector Output, 1NO Contact Configuration, 10 to 30 VDC, 100 mA, 2 kHz Frequency Response, 2 m Cable Connection, <50 ms Response, 1.81 x 0.31 x 0.31 in Size, IP67/IP69K Enclosure, 32 to 104 deg F, Nickel Plated Brass