The SPECTRAN NF-XFR PRO has been specifically designed for use in harsh conditions such as for military use, aerospace, mining, construction, research and development, even in the pouring rain , extreme temperatures and extremely dusty and dirty environments. With this Spectrum Analyzer you can master all the challenges. It provides a powerful, extremely impact resistant Outdoor notebook as well as a high-end spectrum analyzer in one compact device. The NF-XFR PRO has been independently tested in accordance with MIL -STD- 810G , IP65 and MIL -STD- 461F.