1Universal multi-function monitor high performance, accuracy power factor monitor, real-time measurement, harmonic measurement, positive and negative active/reactive energy measurement, time-sharing counting, timing mark, power quality analysis. 2Features such as AVE display, event recording, and demand, with rich input and output port to monitor field device conditions. 3Integrated RS-485 communication port, integrated with various intelligent power distribution systems and power management systems to share rich data. NITOR data and power quality data. 4Multi-functional, most competitive, can directly replace the general power transmission, metering, energy metering and related auxiliary devices, with a wide range of applications, such as energy management systems, power monitoring systems, industrial and mining enterprises, public places, intelligent buildings and distribution board, etc. 5High stability and low failure rate,the mean time between failures is more than 50000h.