ME-82UN Distributed On-line Monitoring System has the characteristics of lightweight, compact, reliable communication, long transmission distance, high test accuracy, low noise, small drift, strong environmental adaptability, high maintainability. ME-82UN is specially designed for engineering testing field, a product for long-term online monitoring. ME-82UN can be widely used in port machinery, bridge construction, rail transit from construction to operation of the whole stage of condition monitoring. ME-82UN can complete the monitoring tasks of a series of physical quantities such as strain, stress, displacement, temperature and vibration under severe environment such as frequent thunderstorms,electromagnetic radiation and large temperature difference. ME-82UN collector adopts a modular design. Each collector is one module. If a module fails, you only need to replace the collector, which greatly improves system maintenance efficiency. The collector communicates with the controller over the RS485 bus. Multiple controllers support synchronous expansion and can adapt to various online monitoring sites.