4.1 Conzerv EM6400NG Series, The Next Generation Workhorse Multifunction Energy meter with NextGen features like Harmonics & Min/Max Monitoring, Digital security > Energy Standard – Class 0.2/0.5S/1 as per IEC 62053-22 / 21 > Power quality analysis with THD & individual harmonics upto 15th over communication > 13 different wiring configuration scheme > Volts, Amps, PF, THD, F, W, Wh, VA, VAh, Var, Varh, Runhrs, Onhrs, Interupts, Preloaded Demand & Import /Export > Min/Max Monitoring with Date/Time stamping > Calibration LED and Heart beat LED for communication Status > Communication : POP or RS485 port