SensoPart FR 50 RL-PAL4 Fiber Optic Photoelectric Sensor

SensoPart FR 50 RL-PAL4 is a compact laser retro-reflective photoelectric sensor (50 x 50 x 17 mm) that uses an autocollimation principle to deliver maximum precision at long ranges. It offers a 0 to 20,000 mm working distance with a switching frequency of 2,500 Hz, making it well suited for fast, reliable detection of very small objects on conveyors or in packaging lines. The red laser light source is Class 1 and produces a very small, visibly focused spot to simplify alignment, while the sensor is designed with no blind zone from 0 mm. Outputs are available as PNP or NPN (antivalent), accessible via a 4-pin M12 plug for easy integration into standard control circuits. The FR 50 RL-PAL4 is housed in an IP67 enclosure, protecting it against dust and water ingress in harsh industrial environments, and it operates across a wide temperature range of -20 to +45 C. This model belongs to the FR 50 RL family and is particularly effective for recognizing tiny parts or features at distance, enabling dependable presence detection and positioning tasks in automation environments.