Bracket. M18 photoelectric sensors - round cylinder. A low-cost series of round cylinder photoelectric sensors offering diffuse (direct), reflective, and transmissive beam detection methods. These compact (60.5mm housing length), nickel-plated brass IP67 and CE marked photoelectric sensors are suitable for almost all industrial applications. They provide a cost-effective alternative to leading brand M18 photoelectric sensors. Features include a two-color LED status indicator, adjustable sensitivity for diffuse sensors, and visible red light for easy alignment. Reflective sensors are supplied complete with reflective and transmission beam.