The M9 Plus is a high-performance power analyzer with a bright 4-row LED display, offering True RMS measurement of voltage, current, power and harmonics. It supports input voltage 0-500VAC, current 0.015A-6A (60A direct optional), site-programmable CT/PT ratios up to 10000A/132KV, RS485 Modbus communication, maximum demand relay output, and accuracy per IEC62053-21, ideal for industrial and commercial energy monitoring.