Carlo Gavazzi ICB12S23F04A2PC Proximity Sensors Inductive proximity sensor, M12 Nickel-Plated Brass, 2m cable, Sn 4mm, Flush mount, Extra-short body, PNP NC output, Supply voltage 10-36Vdc, Max output current 200 mA, Max switching frequency 2 kHz, Operating temperature -25C - +80C, IP67