Telemecanique Sensors, M18 x 1, NPN-NO Inductive Sensor 41mm Length, 12 → 24 V dc supply voltage. Body Style: Barrel. Detection Range: 16 mm. Terminal Type: Cable. Maximum DC Voltage: 24V. Mounting Type: Non Flush. IP Rating: IP65, IP67, IP69K. Switching Current: ≤200 mA. Housing Material: Brass (Case), PPS (Sensing Face). Minimum Operating Temperature: -25°C. Maximum Switching Frequency: 1kHz. Reverse Polarity Protection: Yes. MPN: XS218B4NAL2