The Pepperl+Fuchs RL31-8-2500-IR/59/73C/136 is a long-range diffuse mode photoelectric sensor designed for precise and stable object detection in industrial automation systems. It features an adjustable detection range of 0 to 2500 mm, referenced to a standard white 200 mm × 200 mm target, ensuring high accuracy across varying distances. Utilizing a modulated infrared light source (IRED) at 850 nm, the sensor provides reliable performance even under challenging lighting conditions without the need for a polarization filter. The emitted light spot measures approximately 50 mm at a distance of 2.5 m, with a narrow 2° opening angle for focused detection. Engineered for ambient light immunity up to 50,000 Lux in compliance with EN 60947-5-2, the RL31-8-2500-IR/59/73C/136 ensures consistent operation in bright or variable illumination environments. The Pepperl+Fuchs RL31-8-2500-IR/59/73C/136 may be employed in North America, Europe, Asia, and worldwide automation systems requiring high-precision, long-distance infrared photoelectric sensing solutions.