The SICK WTB4S-3N1162V (Part No. 1046391) is a high-performance photoelectric proximity sensor engineered for reliable object detection in a wide range of industrial automation applications. It features background suppression technology with a sharp PinPoint red LED, allowing it to accurately detect targets while ignoring reflective or variable surfaces behind the object. This ensures stable, repeatable detection in environments where precision is critical.

One of the defining characteristics of the WTB4S-3N1162V is its compact rectangular housing, measuring only 12.2 mm √ó 41.8 mm √ó 17.3 mm and weighing approximately 30 g. Its slim design enables easy installation in confined spaces and high-density layouts, such as conveyor lines, robotic stations, and automated packaging systems. Despite its small size, the sensor maintains robust construction and long-term durability.

In terms of performance, the sensor is equipped with a PNP switching output featuring complementary light/dark switching, providing flexibility for integration into various control systems. With a response time of less than 0.5 ms and a switching frequency up to 1 kHz, the WTB4S-3N1162V is capable of handling high-speed detection tasks. This makes it ideal for fast-moving assembly lines, automated sorting systems, and robotic handling applications where timing and accuracy are critical.

The rugged design ensures stable operation in demanding environments. The sensor operates on a 10–30 V DC supply and includes protections against short circuits, reverse polarity, and electrical interference. Its IP66/IP67 protection rating provides strong resistance to dust, dirt, and water exposure, making it suitable for harsh industrial environments or washdown areas. Additionally, the unit maintains reliable performance across a temperature range of –40 °C to +60 °C, allowing it to function effectively in both extreme cold and hot conditions.

Precision detection is enhanced by a narrow light spot of approximately 2.5 mm at 50 mm distance, allowing it to sense small or thin objects accurately. The LED’s long service life, approximately 100,000 hours under normal conditions, minimizes maintenance and maximizes uptime, making the sensor cost-effective over the long term.