The SICK WTB11-2P1131 (Part No. 1041377) is a compact and reliable photoelectric proximity sensor with background suppression, engineered for precise detection tasks in industrial automation. As part of SICK’s well-known WT11 sensor family, this model delivers accuracy, robustness, and ease of integration, making it ideal for machine building, packaging, and conveyor systems.

At the heart of the sensor’s performance is its visible red LED emitter combined with background suppression technology. This design allows the sensor to reliably detect objects based on their position rather than their reflective characteristics. Shiny surfaces, varying colors, or reflective backgrounds do not interfere with detection, ensuring stable operation across a wide range of materials and environments.

The WTB11-2P1131 offers a nominal sensing distance of 100 mm and supports an adjustable detection range between 30 mm and 200 mm. This flexibility enables operators to fine-tune the sensor to their specific application requirements, whether for short-range, high-precision detection or slightly extended distances. Its ability to adapt quickly during installation reduces commissioning time and enhances operational efficiency.

Equipped with a PNP switching output, the sensor can be directly integrated into modern control systems. Its design supports fast response times, allowing accurate detection of moving objects in dynamic processes such as sorting, alignment, or packaging. The combination of quick reaction and reliable switching makes it a dependable choice for automation environments where precision is critical.

The mechanical construction of the WTB11-2P1131 is compact and durable. Its housing is made from high-quality plastic and carries an IP67 protection rating, providing effective resistance against dust ingress and temporary water exposure. This ensures reliable performance even in challenging industrial conditions. With its compact dimensions, the sensor is easy to install in confined spaces without compromising functionality.

From an electrical standpoint, the unit operates on 10–30 V DC supply voltage, consuming minimal current. Integrated protective features such as reverse-polarity protection and short-circuit resistance ensure long-term reliability and reduce the risk of failures caused by incorrect wiring or electrical interference. Standardized connectors further simplify integration and maintenance.

In practice, the WTB11-2P1131 is well-suited for applications such as object detection on conveyors, packaging line monitoring, and part presence verification in assembly systems. Its precision, rugged build, and ease of setup make it a trusted solution for automation engineers and system integrators seeking both performance and durability.

In summary, the SICK WTB11-2P1131 combines compact design, accurate background suppression, flexible sensing range, and rugged housing. With its fast PNP output and industrial-grade protection, it ensures reliable and consistent detection performance, making it a versatile and dependable choice for modern automation systems.