EM200LCD single-phase power intelligent monitoring instrument is an intelligent power monitoring device used in medium and low voltage systems. It has powerful collection, processing, statistics and control functions. It has measurement and calculation of single-phase AC power parameters, electrical measurement accumulation, and 2~31 harmonics. Wave analysis, electric energy pulse counting, switch quantity monitoring, SOE recording, relay output control, DC transmission output, over-limit alarm, multi-rate electricity measurement statistics and other functions. Its measurement accuracy reaches 0.2 level. EM200LCD has a segment LCD display, which can display all electrical parameters in real time. At the same time, it can be connected to the EasyECM integrated monitoring system (or third-party system) of ESDTEK through the RS485 communication interface to form a complete automated monitoring system.