M500 Insulation Megohmmeter Compatible with Supco M500

Key features

• Prevent Costly Equipment FailuresThe M500 Megohmmeter detects abnormally low insulation resistance before it develops into unexpected breakdowns. Suitable for HVAC systems, refrigerator compressors, isolated inverter compressor and ECM motor windings, standard motors, transformers, control panels, and conduit wiring.
• Instant Three-Color IndicationThe easy-to-read LED scale displays insulation condition without complicated calculations: red indicates Bad below 20 MΩ, yellow indicates Caution from 40–100 MΩ, and green indicates Good from 150–1000 MΩ. (If the ON light is illuminated but no scale LED appears, the insulation resistance is above 1000 MΩ.)
• Portable Jobsite KitThe lightweight M500 Megohmmeter comes with a convenient carrying case and integrated test lead storage for organized transport. Powered by two C-size batteries—not included—no charging cables, no waiting, just grab and go to the next job. Perfect for service calls across multiple sites in one day.
• Professional 500V Insulation TestingDaily testing on compressors, ECM motors, transformers, and control panels. Whether you're in a crawl space, on a rooftop, or troubleshooting in a commercial building—this tester delivers reliable results where it matters most.
• Impact-Resistant HousingConstructed with a rugged, impact-resistant ABS housing, this insulation resistance tester is built to handle routine transport and demanding field use. Its durable exterior protects the internal components and supports reliable long-term performance.

Free shipping on orders $50+. 30-day hassle-free returns.