The Sick 1055145 (Model WTB9M4-3N2411) is a high-performance through-beam photoelectric sensor designed for long-range object detection in demanding industrial automation environments. Part of the WTB series, this sensor offers robust performance, precise detection, and durable construction, making it an ideal choice for applications such as material handling, conveyor systems, packaging lines, and high-speed production operations.

One of the primary advantages of the WTB9M4-3N2411 is its extended sensing range of up to 20 meters. Utilizing the through-beam principle with separate emitter and receiver units, the sensor provides consistent and accurate detection over long distances. This makes it well-suited for monitoring large conveyors, detecting bulky objects, and maintaining reliable operation in areas where traditional sensors might struggle with distance limitations.

The sensor integrates PinPoint visible red LED technology, delivering a highly focused light spot that simplifies alignment and ensures precise detection. The clearly visible beam allows operators to quickly and accurately align the emitter and receiver during installation, reducing setup time and minimizing alignment errors. This feature also enhances detection accuracy for small or reflective objects, which is essential in high-precision manufacturing environments.

Durability is a key feature of the WTB9M4-3N2411. Its IP67-rated housing protects against dust, water, and other environmental hazards, enabling reliable operation in harsh industrial settings. Combined with a standard M12 connector, the sensor provides secure electrical connectivity and allows straightforward integration into existing control systems. These features ensure long-term reliability and reduce the need for maintenance or sensor replacement.

Electrically, the WTB9M4-3N2411 employs an NPN output and supports both Light On and Dark On switching modes, providing flexibility for different automation logic requirements. Its fast response time allows it to accurately detect fast-moving objects, making it suitable for high-throughput production lines, automated sorting systems, and packaging operations. The sensor operates within a voltage range of 10 V to 30 V DC, ensuring compatibility with standard industrial power supplies, and performs reliably across an operating temperature range of –25 °C to +55 °C.

Compact yet robust, the WTB9M4-3N2411 can be installed in space-constrained areas without compromising detection performance. Its combination of long-range sensing, precise LED alignment, rugged construction, and flexible electrical output makes it a dependable solution for engineers and automation professionals.