Carlo Gavazzi ICB18S30N20POM1 Manufacturer description: Inductive proximity sensor, M18 Nickel-Plated Brass, M12 plug, Sn 20mm, Non-flush mount, Short body, PNP NO output, Supply voltage 10-36Vdc, Max output current 200 mA, Max switching frequency 1,5 kHz, Operating temperature -25C - +70C, IP67. Inductive transmitter M18 PNP NO 2m plug connection, unshielded version length 30mm. Sensing distance 20mm.