The FU-78 optical fiber sensor operates based on the principle of light interference and modulation, allowing it to detect minute changes in physical parameters such as strain, temperature, and vibration. *Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product. *1 For details on the detecting distance, see the fibre amplifier catalogue. FU-78 Optical Fiber Sensor: Enhancing Precision and Reliability in Modern Measurement Systems In today's rapidly evolving technological landscape, the demand for high-precision, reliable, and durable measurement systems has never been greater. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's. The Keyence FU-78 is a thrubeam-type fiber optic sensor unit engineered for high-precision detection in industrial automation environments. As part of Keyence’s versatile fiber optic product lineup, this model is designed for situations requiring reliable detection in compact spaces while. FU-78, Fiber Unit Thrubeam type in FS-N40 series by KEYENCE America. Enjoy peace of mind with our one-year warranty on all products, ensuring a worry-free purchase.