The Pure BlackBox Single Phase is an advanced handheld power quality analyser equipped with PQZIP Technology, is an easy to use plug and play device that continuously records all power quality parameters without thresholds settings or recording configuration.  The analyzer records more than 5,000 power quality parameters including RMS, THD, powers, power factor, unbalance and harmonics are logged continuously for more than a year at half cycle, 10/12 Cycles, 150/180 Cycles, and 2 hours resolution.