Balluff BOS 08M-NO-RD11-S49 Diffuse Photoelectric Sensor

The Balluff BOS 08M-NO-RD11-S49 is a compact 8 mm diffuse photoelectric sensor that detects nearby objects using red-light illumination across a 0 to 55 mm sensing range, powered from 10 to 30 V DC. It provides a three-wire DC output through a 3-pin M8 male connector with a normally open contact, enabling straightforward connection to PLCs or controllers in tight automation spaces. The RD11 designation identifies the red-emitting variant in the BOS 08M family, with the S49 suffix indicating this specific model revision. In diffuse mode, the sensor detects an object when reflected light from the sensed surface returns to the receiver, with sensing performance influenced by target size, color, and surface reflectivity. The compact 8 mm form factor suits small-format pick-and-place stations, compact conveyors, or door-sensor positions where space is at a premium. Wired to a standard DC supply, the sensor is compatible with many automation platforms that accept 10–30 V DC, and the 3-pin M8 connector supports quick field wiring and replacement. Common applications include presence/absence detection on conveyors, position sensing on end-of-line fixtures, and general object detection in tight automotive, packaging, or electronics assembly cells.