The miro class a range of portable power quality (pq) recorders are precision instruments that offer comprehensive and reliable compliance monitoring of low voltage circuits. Built for high performance, toughness and focus on ease of use, the miro range are the workhorse instruments of choice for a variety of power monitoring applications including power quality analysis, supply compliance checks and voltage investigations, power flow studies, energy audits, photovoltaic � solar, railways systems, and transformer monitoring pq45 (4 voltage and 4 current channels).class a declared this smart instrument can measure, frequency, magnitude, flicker, dips and swells, voltage interruptions, voltage and current unbalance, power meter, voltage and current harmonics, interharmonics, thd, main signalling, rvc, overdeviation, crest factor, temperature, waveform capture, event rms capture, ripple capture, phasor diagrams tec etc. Built to ip67 rating with safety 10kv isolation to ground. 3g 4g options available.