... 1.Measure object : voltage, current, power, power consumption, power factor, frequency 2.Three phase 1.Features of DW9 three phase digital power meter : - ... AC 90~260V 50/60HZ, power consumption<5VA. - Applications: applied in electrical power systems for auto control, e. g.: single/three phase current/ ... ELECTRICAL CO.LTD With or Without Analog Output , DW9 Three Phase Series Digital Power Meter