The Sick SOOD-BS-R-PN-50 is a background suppression photoelectric sensor from the SOOD series, using a red LED light source. It detects objects between 3 mm and 50 mm with a push-pull output that can be configured for light-ON or dark-ON operation. The M8 plug termination and IP65/IP67 rating mean it can handle washdown environments without a separate enclosure — the seal is at the connector, not the cable gland.
The 50 mm maximum sensing distance is the real-world limit for a 90 % reflective white target; darker objects reduce that range. The 3 mm minimum blind zone means you cannot mount it flush with the target — you need that gap. Background suppression means the sensor measures the angle of returned light, not just intensity, so it ignores shiny backgrounds behind the detection plane. This is the key advantage over a diffuse sensor in a conveyor or pick-and-place application where the belt or backplate would otherwise trigger false readings.
The 7.5 mm width is the critical dimension for DIN-rail or bracket arrays — it fits standard 8 mm pitch sensor mounting rails. The M8 plug (3-pin, typically) mates with standard M8 cordsets; verify your existing cable has a female M8 connector. The push-pull output sinks or sources 50 mA, which drives most PLC inputs directly without a relay. Operating voltage is 10–30 VDC, so it works on 12 V or 24 V systems without adjustment.