M18 inductive proximity with IP69K washdown rating
The XS218AAMAU20 is an M18 threaded cylindrical inductive proximity sensor from the Telemecanique XS2 series, built for wet and high-pressure washdown environments. Its IP67 and IP69K ratings mean the sensor body and the connector interface survive hose-down cleaning at close range, so it fits on food processing, beverage, or pharmaceutical lines where sanitation cycles are routine. It runs on a wide 24-240 V AC or DC supply, which simplifies wiring in panels that mix control voltages — you don't need a separate voltage regulator for the sensor loop. The 2-wire AC/DC output is normally open (NO), switching up to 300 mA load current.
Sensing range and target correction
Unshielded design gives a sensing range of 8 mm minimum to 15 mm maximum on mild steel. That 15 mm top end is the rated distance on a standard steel target; for stainless steel, derate by roughly 0.7x, so expect reliable detection at about 10-11 mm. The yellow LED indicator lights when the target is in range, which helps during setup without a separate alignment tool.
Regulatory approvals and compliance paperwork
Carries UL Listed, CSA, CE, and CCC marks, plus RoHS compliance — this covers North American and European panel builds. The NEMA 4X enclosure rating matches the IP67/IP69K ingress protection, so the sensor is suitable for indoor and outdoor corrosive environments like wastewater or chemical dosing stations.
Listed as current production, so it's still a standard catalogue item through Telemecanique distribution.