Test Current: 250V(R=250KΩ)1mA, 500V(R=500KΩ)1mA, 1000V(R=1MΩ)1mA, basic accuracy: ±10%. Insulation Resistance: 250V:1MΩ ~200MΩ, 500V:1MΩ ~200MΩ, 1000V:10MΩ ~2000MΩ, basic accuracy: ±(4% reading ±2 words).
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