SICK WTB9M4-3P2261 Sensor

SICK WTB9M4-3P2261 is a compact background-suppression photoelectric sensor from the W9 family, housed in a rectangular body (12.2 mm wide x 49.8 mm high x 23.6 mm deep) with an M4 mounting hole and rugged IP66/IP67/IP69K sealing for harsh industrial environments. It detects small objects on automation lines with a sensing range of 20 mm to 350 mm maximum, and 20 mm to 200 mm for targets with lower reflectivity (90% remission versus 6% remission per DIN 5033); the visible red light operates at 650 nm with a PinPoint LED and yields a light spot of Ø4.5 mm at 75 mm. The sensor provides a PNP output through an M8 4-pin connector and is powered from a DC supply up to 30 V, drawing up to 100 mA; it also features a fast response time of less than 330 μs and a 5-turn potentiometer for fine-tuning. Model number 1051889 corresponds to this device, and SICK notes an average service life of about 100,000 hours at 25 °C.