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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 DCFUNFANG 
FUNFANG Insulation Resistance Meter Digital Ohmmeter Handheld Insulation Tester Megameter 0-2000MΩ High Accuracy Megohmm ?The rated test voltage is , with a measurement range of up to 2000MΩ and has the ability to measure AC voltage.BE-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 gernie 
BM500A LCD Display Digital Insulation Meter - Portable Megohm Tester for Maintenance, Test and Inspection With LCD display, the measurement range can arrive 1999MΩ, and the sampling rate can arrive 2.3 times/sec.Generic 
Insulation Resistance Meter Digital Ohmmeter Megger Handheld Insulation Tester Megameter 0-1000MΩ 500V High Accuracy Meg ✅ The rated test voltage is 500V, with a measurement range of up to 1000MΩ and has the ability to measure AC voltage.Chunnuan 
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 resiNurdo 
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