ION9000 measures all standard power quality parameters including harmonics to the 63rd, sags, swells, transients, and flicker to IEC 61000-4-30 Class A, providing utility-grade power quality assessment for large industrial and commercial facilities. Its EtherGate master function aggregates data from up to 64 Modbus slave devices, reducing cabling infrastructure in switchgear rooms. Real-time streaming over IEC 61968-9 and DLMS/COSEM ensures compatibility with AMI head-end systems and energy management platforms. Integrated alarming, waveform capture, and sequence-of-events log provide forensic data for investigating power quality disturbances. The webserver UI enables parameter access without dedicated metering software.