Sick WTB27-3P2441 Through-Beam Photoelectric Sensor

SICK WTB27-3P2441 is a compact diffuse photoelectric sensor with background suppression that detects objects on conveyors or packaging lines without interference from the background. The device provides a 100–1,100 mm sensing range using a visible red light at 660 nm, with a light spot of about Ø15 mm at 500 mm. Its 30 mm cylindrical housing and M12 connector support a three-wire connection, and sensitivity is adjustable via a built-in potentiometer. It operates on a DC supply of 10–30 V and delivers a DC output via a three-wire wiring scheme. The 1027744 variant describes diffuse operation with background suppression and a 100–1,100 mm range, including PNP LO DO with an M12 connector. In practice, performance is specified for targets with around 90% remission (DIN 5033), making it suitable for detecting everyday parts on standard production lines. Typical applications include presence/absence checks and part detection on packaging equipment, conveyors, and assembly lines where reliable background rejection improves uptime.