Advanced multi-parameter digital panel meter measuring Voltage, Current & Frequency plus P.F., KW, KVA and RPM on a 3-line, 4-digit LED display. Configurable for single or three-phase VIF applications with class 1 accuracy, 90-270V AC auxiliary supply, inbuilt selector switch, THD and unbalance measurement, import/export monitoring, and voltage range up to 500VAC (L-L) with password protection.