The E2A-M18KN16-WP-D1 2M with Proximity Sensors M18Uns NPB 16mm DC2W NO 2M Cbl is a cylindrical, threaded proximity sensor that detects the presence or absence of objects in a certain operating distance. It is made by Omron, a manufacturer of industrial automation products. The 2M Cbl version has a cable with an input range of 10 to 30V AC/DC, a sensing point distance of up to 2 meters, and a response time of within 7 milliseconds. It is designed to be used in difficult environments, including extreme temperatures, humidity, water splash, and strong impacts. It is also waterproof, dustproof, and corrosion resistant.