Multifunction monitor meter with high ability and precision power predeterminer time measure, harmonic measure, positive and negative active power/reactive power electric energy measure, Time-sharing count, fix time mark ,power quality analyze , real time wave display, event record, demand and so on function, and with configure abundance input output ports to monitor and control locale device status, and integration RS–485 communication port, integration with each kinds intelligent distribute system and power energy manage system, share abundance monitor data and power quality data.