SensoPart FR 20 RG-1 -PSM4 Fiber Optic Sensor

The SensoPart FR 20 RG1-PSM4 is a compact retro-reflective photoelectric sensor designed to reliably detect transparent targets using an autocollimation principle. Housed in the FR 20 form factor (32 x 20 x 12 mm) and featuring a four-pin M8 connector (PSM4), it uses a red LED light source to illuminate translucent objects and relies on a reflector in a retro-reflective setup for detection. The RG1 variant is intended for use with a reflector to improve sensing stability when inspecting clear materials such as glass or clear plastics on production lines. It provides a four-wire output suitable for integration with PLCs and sensors networks, and its rugged construction supports industrial environments with an IP67 ingress protection rating. The operating temperature range is broad enough for demanding applications, spanning typical workshop conditions. With its small footprint and straightforward mounting, the FR 20 RG1-PSM4 is well suited for tight spaces in packaging, manufacturing, and assembly lines where non-contact detection of transparent parts is required, offering reliable switching behavior for automated control without dark or occluded zones compromising performance.