D2HW-C223MR is a Omron Inductive Proximity Sensor made to detect ferromagnetic objects. It is a cylindrical, shielded, DC 2-wire-type sensor with a sensing distance of 8mm and a rated operating voltage of 10 to 30V DC. It features short-circuit protection, surface mount installation and is available with an LED indicator. It is dustproof and water-proof, suitable for applications in severe environments.