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Best Choice KLEIN TOOLS 
Klein Tools ET600 Insulation Resistance Tester – Tests at 125V, 250V, 500V & 1000V DC, Measures Up to 4000MΩ, TRMS 1000V Insulation Resistance Tester – Tests insulation resistance up to 4000MΩ at 125V, 250V, 500V and 1000V DCUNI-T 
Insulation Resistance Meter UT501B Insulation resistance meter, excellent device with easy operationBE-TOOL 
BE-TOOL Megger Megohm Meter VCB60+ Digital Insulation Resistance Tester 1000V 0.1~2000MΩ (Black+Orange) ► Dual alarm: sound and light. The screen returns to zero when resistance to shortcuts occurs to avoid burns undergroundBest Value Nurdo 
Insulation Tester, Insulation Resistance Tester DCV ACV Meter 1000V Ground Megger Megohmmeter Megohm Voltmeter w/LCD Bac 💡[Large LCD 2000 counts display with switchable backlight, easy to read.FUNFANG 
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Insulation Resistance Meter Digital Ohmmeter Handheld Insulation Tester 0.1MΩ-2000MΩ Auto-Ranging High Accuracy LCD Insu Capability: Can do the test at several test voltages: 100V, , 500V, 1000V; voltage below AC750V can be tested; with resiChunnuan 
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