Leuze FRK 92/4-300 S Diffuse sensor with background suppression

The Leuze FRK 92/4-300 S is a diffuse reflectance sensor with background suppression designed for reliable part detection on conveyor and machine-automation lines. It detects target surfaces at a practical range up to 300 mm by comparing the reflected signal against a background reference, maintaining stable sensing despite clutter in the background. The device is configured for standard DC operation with a three-wire interface and provides a robust switching output suitable for direct integration with PLCs and industrial controllers. Mechanical mounting supports versatile alignment through common mounting accessories and a compact form factor compatible with standard industry brackets. Typical applications include edge and presence sensing on conveyors, part-in-feed checks, and automated handling tasks where background interference must be suppressed for reliable detection. The sensor adheres to common industrial safety and automation standards and can be integrated with other Leuze optical sensor families for expanded sensing logic. Documentation - Technical Datasheet: https://www.leuze.com/en-us/products/optical-sensors/frk/frk-92-4-300-s/datasheet - Installation Instructions: https://www.leuze.com/en-us/products/optical-sensors/frk/frk-92-4-300-s/installation-instructions - Product Family Overview: https://www.leuze.com/en-us/products/optical-sensors/frk/frk-92-4-300-s - Approvals and Certifications Overview: https://www.leuze.com/en-us/products/optical-sensors/frk/frk-92-4-300-s/approvals