Carlo Gavazzi ICB12S23N08A2NC Proximity Sensors Inductive proximity sensor, M12 Nickel-Plated Brass, 2m cable, Sn 8mm, Non-Flush mount, Extra-short body, NPN NC output, Supply voltage 10-36Vdc, Max output current 200 mA, Max switching frequency 2 kHz, Operating temperature -25C - +80C, IP67