Insulation Range: 250V: 0.1MΩ~20 MΩ/20MΩ~500 MΩ; 500V: 0.1MΩ~50 MΩ/50MΩ~1000 MΩ; 1000V: 0.1MΩ~100 MΩ/100MΩ~2000 MΩ. Input Impedance: 1MΩ. Large LCD display(90 48mm), with backlight, max. display "1999".
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