... seriesBasic Current0-5A(A)Accuracy0.2%Reference Voltage0-600V(V)Current RatioSet freelyDisplay8 digit LEDFrequency0-2.5KHZ(Hz) ... ,mainly electricity value.can display parameter value of voltage/current/power/power factor/reactive power/power frequency.2 ... ), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter ...