Eaton 13102A6517 Photoelectric, Comet Series, Diffuse Reflective Photoelectric Sensor, Comet Series, Focused Diffuse Reflective, 1.6 inch (40 mm) Sensing Range, Visible Red Beam, 15-30 VDC, 6 Ft. Cable Connection, DC Operation: NPN and PNP Output. Polyurethane Housing. NEMA Rating: 4X, 6. Used to detect Metallic or Non-metallic objects.