SICK WTB12-3P2431 Photoelectric Sensor

The SICK WTB12-3P2431 is a background-suppression photoelectric proximity sensor (block sensor) built for reliable object detection on conveyors, packaging lines, and other automation equipment. It provides a 20 to 350 mm sensing range with a PNP three‑wire output delivered over an M12 four‑pin connector, and it operates from up to 30 V DC with a maximum load of 100 mA. The rugged metal housing carries IP66/IP67/IP69K protection and is specified for -40 to +60 °C environments, with a visible red light (640 nm) indicating sensing state. This model enables precise detection of passing parts in cluttered environments without external reflectors, making it a solid choice for industrial sensing where stable, background-subtracted performance is essential.