SICK WT160-P420 Photoelectric Proximity Sensor

The SICK WT160-P420 Photoelectric Proximity Sensor is a compact DC-powered sensing device designed for reliable non-contact object detection in industrial automation. It operates from 10 to 30 V DC and delivers a switching output capable of handling up to 100 mA at up to 30 VDC, with a visible red LED indicator for quick status checks in busy environments. This model employs background suppression and offers a sensing range of 3 to 60 mm, enabling stable performance across varying surface colors and textures. The part is cataloged as 6-009-520, and multiple listings note that it has been discontinued by the manufacturer, a factor to consider when planning replacements or sourcing. Weighing roughly 0.04 lb, the WT160-P420 is a small, lightweight sensor suitable for tight spaces on control panels and machinery. Overall, it provides a straightforward, compact solution for presence and proximity sensing on conveyors, packaging lines, and general automation tasks where a red-light photoelectric sensor with background suppression is appropriate.