... + - 3FS (below 1000mT) + - 5% + - 3FS (above 1000mT) Digital Tesla MeterTesting range: 0~200mT~2000mTAccuracy: + - 2% + - 3FS (below 1000mT)+ - 5% + - 3FS ... of your convenience.Technical DataMeasuring field DC magnetic fieldMeasuring range 0~2000mTResolution 1 mT(10GS)Accuracy ± 2%(reading) ... for meter, 1 battery, 1operational manual Gauss Machine with Testing range: 0~200mT~2000mT,CONVENIENCE USING