The SICK GRTB18S-N2431V (part number 1085748) is a high-performance retro-reflective photoelectric sensor designed for precise and reliable object detection in medium- to long-range industrial automation applications. Part of the GRTB18S series, it combines advanced optical technology with a durable M18 cylindrical housing, ensuring consistent and accurate detection across a wide range of industrial processes.

A standout feature of the GRTB18S-N2431V is its ultra-long sensing range, capable of detecting objects from 50 mm up to 16 m when used with a suitable reflector. This makes it well-suited for applications such as conveyor monitoring, automated packaging lines, material handling, and warehouse automation. The retro-reflective detection principle ensures stable and accurate performance, even with reflective, dark, or irregularly shaped objects, providing reliable results in diverse industrial settings.

The sensor incorporates a PinPoint visible red LED emitter with a wavelength of 650 nm, producing a focused, easily visible light spot for precise alignment. This feature simplifies installation, allowing operators to accurately position the sensor and verify alignment quickly. The visible LED ensures consistent detection across the sensor’s full range, reducing setup time and improving operational efficiency.

Electrically, the GRTB18S-N2431V features dual NPN outputs with configurable light-on and dark-on switching modes, providing flexible integration into different control architectures. The dual-output design allows engineers to customize detection logic according to specific application requirements. The sensor also includes standard protective features such as reverse polarity, short-circuit, and overload protection, ensuring long-term reliable operation.

Mechanically, the sensor is housed in a robust M18 cylindrical body with an IP67 rating, providing protection against dust, water ingress, and mechanical impact. Its durable construction ensures reliable operation in harsh industrial environments such as manufacturing floors, robotic automation systems, and material handling operations. The compact design allows easy installation in confined spaces without compromising durability or performance.

Performance-wise, the GRTB18S-N2431V delivers a fast response time of under 500 µs, making it suitable for high-speed production lines and automated machinery where rapid and accurate detection is critical. Its broad operating voltage range and efficient power consumption allow seamless integration into industrial control systems while maintaining consistent performance over extended periods.

In summary, the GRTB18S-N2431V combines long-range detection, precise LED alignment, dual-output flexibility, and rugged industrial durability, making it an excellent choice for engineers and automation professionals seeking reliable, high-performance sensing for material handling, packaging, and robotic applications.