The Omron E2EC‑C1R5D1 Proximity Switch Sensor is a compact inductive sensor that detects metallic objects without contact, enabling metal presence sensing and position feedback in automation systems. Packaged in an M8 cylindrical threaded housing and rated IP67, it stands up to industrial dust and water exposure while delivering quick, reliable detection at a 1.5 mm sensing distance. This 3‑wire DC sensor operates on 12–24 V DC and can carry up to 100–200 mA depending on the variant, offering a high switching frequency for fast response. An LED provides clear power and output indication, and mounting is accomplished via the threaded body with a lock nut. Common applications include conveyor systems, packaging equipment, assembly machines, indexing tables, and robotic cells where metal part detection, position confirmation, and presence sensing must trigger precise control actions in manufacturing and material handling environments.