SICK KT5G-2P1121 Contrast Sensor

The SICK KT5G-2P1121 is a high-performance contrast sensor designed for reliable detection of contrasts in industrial automation applications, such as printing, packaging, and labeling industries. It utilizes a green LED light source for precise mark detection on various surfaces, offering dark and light switching outputs for versatile integration. Key features include a compact rectangular housing, adjustable sensitivity via potentiometer, and robust construction suitable for harsh environments. Benefits include high switching frequency up to 10 kHz for fast processes, excellent repeatability, and immunity to optical disturbances. Compared to similar products like those from Banner or Keyence, the KT5G-2P1121 provides superior contrast resolution and easier setup, though it may require more initial calibration in highly variable lighting conditions. Drawbacks include a fixed sensing distance, limiting its use in applications needing variable ranges. This sensor excels in detecting print marks, labels, or color differences, enhancing production efficiency and reducing errors. Based on attached images, the unit appears used with minor wear, including scratches and dust, but functional with intact labeling showing part number 1015997, serial 1 015 687, and ratings like DC 10-30V. No parent/child assets visible. Estimated market price for used condition: $150-250 USD, based on recent eBay and industrial surplus listings. For resources, refer to SICK official datasheet (https://www.sick.com/us/en/contrast-sensors/kt5/kt5g-2p1121/p/p10809) and operating instructions PDF (search 'SICK KT5G operating instructions'). Model decoder: KT5G (rectangular, green LED), -2P (PNP output), 1121 (specific config with M12 connector).