The SICK WTB4S-3N2162V (Part No. 1046392) is a high-performance photoelectric proximity sensor designed to provide precise and reliable object detection in industrial automation systems. Equipped with background suppression technology and a sharp PinPoint red LED, the sensor delivers accurate detection of objects while effectively filtering out reflections and variations from surrounding surfaces. This ensures repeatable, dependable performance in fast-paced manufacturing, packaging, and logistics applications.

A major advantage of the WTB4S-3N2162V is its compact rectangular housing, measuring 12.2 mm √ó 41.8 mm √ó 17.3 mm and weighing approximately 30 g. Its slim and lightweight design allows easy integration in confined or high-density layouts where space is limited, such as conveyor systems, robotic cells, and automated packaging machinery. Despite its small size, the sensor provides robust and durable construction, ensuring long-term reliability in industrial environments.

In terms of output performance, the sensor offers a PNP switching output with complementary light/dark switching, making it suitable for a variety of control systems. With a fast response time of less than 0.5 ms and a switching frequency of up to 1 kHz, the WTB4S-3N2162V can reliably detect objects in high-speed automation tasks. This capability is particularly useful in applications such as conveyor monitoring, robotic positioning, and fast-moving assembly operations, where timing and precision are critical.

The sensor is built to withstand harsh environments. It operates on a 10–30 V DC supply and features protections against reverse polarity, short circuits, and electrical interference. Its IP66/IP67-rated housing offers strong resistance to dust, dirt, and water, allowing reliable operation in demanding or washdown-prone industrial settings. The unit also performs effectively across a temperature range of –40 °C to +60 °C, making it suitable for cold storage areas or high-temperature production floors.

Accuracy is enhanced by a narrow 2.5 mm light spot at 50 mm distance, which enables the sensor to detect small, thin, or closely spaced objects with precision. Additionally, the LED has a service life of approximately 100,000 hours under normal operating conditions, minimizing maintenance requirements and maximizing operational uptime.