The SICK WTB2S-2P3160 is a photoelectric proximity sensor from the W2S-2 family, using background suppression to detect objects within a 1 mm to 66 mm range regardless of color or reflectivity. It switches on light reception (Light-ON) and outputs a PNP signal at up to 50 mA, with a response time of 500 µs. The visible red pinpoint LED makes alignment straightforward during commissioning — you see the spot on the target.
The 66 mm sensing distance with background suppression means this sensor ignores background objects beyond that point — useful on conveyors where product passes in front of a fixed backstop. The 500 µs response keeps up with fast-moving parts on a pick-and-place or packaging line. IP67 rating lets it handle washdown splashes and dust in food or light industrial environments. The M8 3-pin connector (not a pigtail) keeps the footprint tight: 7.7 mm wide, 21.8 mm tall, 13.5 mm deep — fits between machine frames or in a tight rail section. Operating range is 10–30 VDC, with the PNP output sourcing up to 50 mA. Temperature span from -25 °C to +50 °C covers most indoor factory conditions but not freezer or oven zones.