The SICK KTM-WP11181P is a compact contrast sensor from the KTM series, designed for mark detection on packaging, labeling, and print registration lines. Its 12.5 mm fixed sensing distance means it catches high-contrast marks at a consistent standoff — no adjustment needed, which simplifies setup on a conveyor rail. The RGB LED light source lets it detect color marks independent of hue, so a single sensor handles black-on-white, red-on-silver, or yellow-on-clear without swapping heads. The 32 µs response time is the key spec for high-speed lines: it resolves marks passing at up to roughly 15 m/s (assuming a 0.5 mm mark), so it keeps up with fast-moving webs or bottles without missing a trigger. The PNP output (50 mA load current) switches directly into a sinking PLC input — no pull-up resistor needed. Operating voltage is 12–24 VDC, so it runs off standard machine supplies. The M8 4-pin male connector keeps wiring clean; no pigtail to dress. Switching is selectable Light / Dark ON via the teach-in, so you can set it to fire on the mark or the background.
Integration notes
At 12 mm wide, 32 mm tall, and 21 mm deep, the KTM-WP11181P fits tight spots on a bracket or DIN-rail mount. The M8 connector points downward in a typical vertical mount, so leave clearance for the cable bend radius.