FEATURES · Stable measurement results can be obtained under a noisy environment by introducing the FFT (Fast Fourier Transform) technology. ·LCD display · Backlight function to view the test results in dimly areas · Rk Function is available to cancel the residual resistance on the Test Leads. · Battery Check Function · Auxiliary Earth Resistance Measurement Function . Auxiliary earth resistances are measured and displayed. · Warning for Auxiliary Earth Resistance Measurements . Warnings are displayed on the LCD when auxiliary earth resistances are too high and may result in inaccurate measurements. · Auto-Power-Off Function . The instrument is automatically powered off when 5 min passes without any Key operation. · Data storage . Save 1000 test data IEC 61010-1 (CAT.III 300V, CAT.IV 150V, Pollution degree 2) IEC 61010-031(Requirements for hand-held Probes) IEC 61557-1, 5 (Earth Resistance Tester) IEC 61326-1 EMC Standard Test range (temperature and humidity23±5℃45~75%RH) Accessories 4* Auxiliary Earth Spikes 4 * Earth Test Leads (one Red Earth Test Leads 15 meters,one Yellow Earth Test Leads 10 meters,one Green Earth Test Leads 5 meters,one Black Earth Test Leads 5 meters ) 1 * manual(in English) 1 * Bags