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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 DCBE-TOOL 
BE-TOOL Insulation Resistance Meter, VCB60+ Digital Insulation Resistance Tester Megger Megohm Meter 1000V 0.1~2000MΩ (B ►Dual alarm: sound and light. The display will return to zero if a shortcut resistor occurs to prevent burning under theNurdo 
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.Best Value FUNFANG 
FUNFANG Insulation Resistance Meter Digital Ohmmeter Handheld Insulation Tester Megameter 0-2000MΩ 1000V High Accuracy M 📍The rated test voltage is 1000V, with a measurement range of up to 2000MΩ 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 resiChunnuan 
Chunnuan UT501A 1000V Insulation Resistance Meter Megohmmeter Voltmeter w/LCD Backlight Auto Range Insulation Resistance Meter Tester Earth Tester Megohmmeter AC Voltmeter w/LCD BacklightMEIJUN 
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Suitable for measuring insulation resistance of various electrical equipment and insFluke Fluke 1507 Digital Insulation Resistance Tester Measures AC/DC voltage from 0.1 V to 600 V and resistanceHUANQIN Insulation Resistance Tester Electrical Megger Insulation Resistance Tester Digital High-Precision Resistance Meter Automatic release voltage function. Suitable for measuring insulation resistance of various electrical equipment and insVEMER KYORITSU KEW 3132A Analogue Tester for Electricians Multimeter for Measuring Low Voltage Resistance and Continuity Test Insulation resistance meter and continuity test of potential and protective conductorsBTER Earth Ground Resistance Tester Meter, 2000Ω Digital Ground Earth Resistance Meter with LCD Display & Storage Case, Profe Earth Ground Resistance Tester Meter, 2000? 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