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Professional Grade Insulation Diagnostic Designed specifically for HVAC technicians and electricians, this tester provides precise insulation resistance measurements up to 1000 Megohms (M) at 500V. It is the ideal tool for detecting insulation aging, moisture intrusion, or thermal damage in hermetic refrigeration compressors, motor windings, transformers, and relays. A cost-effective and reliable alternative to expensive digital or analog meggers for fast fault detection. | Clear LED Zone Scale Indicator Eliminate guesswork with the intuitive LED zone scale display. The tri-color system gives instant visual feedback on equipment health: Green (Good, >150M), Yellow (Caution, 40-100M), and Red (Hazard/Bad Insulation, <20M). This allows for quick, accurate decision-making even in dimly lit work environments, significantly improving on-site efficiency. | Rugged & Impact Resistant Design Built to withstand harsh job site conditions, the unit features a double-sided, heavy-duty ABS housing that offers superior resistance to impacts, drops, and wear. It is equipped with high-quality test leads that provide a secure connection, reducing false readings caused by poor contact and ensuring long-term durability. | Portable with Integrated Storage Designed for convenience, the rear panel features a built-in storage compartment for test leads, preventing tangles or loss. The kit comes with a custom soft zippered carrying case to fully protect the meter and accessories. Lightweight and battery-operated (requires 2x C batteries, not included), it is an essential portable addition to any tool bag. | Wide Application & Safety Features From residential AC repair to industrial motor maintenance, the M500 handles it all. It helps prevent short circuits and equipment burnout caused by insulation failure, saving on costly repairs. Featuring simple one-button operation and automatic discharge circuitry to ensure user safety, it is perfect for both professional service technicians and DIY enthusiasts.