Power Meter ,energy meter,meter, Indicate working voltage, power, electrical quantity, cost setting and working condition. range of measuring Voltage110~280V,Power 1~3000W,Coulometer 0.0001~9999AH,Time 0~60 minutes, 0~24 hours, 0~999 daysRefresh Frequency over two times per secondMeasurement Accuracy first classDisplay Mode 8 bit digital (4 bit concern with time) LCD screen, plus 4 decimals