About This Precise Insulation Testing, Ensure Electrical Safety:The M500 megohmmeter (compatible with Supco M500 megohmmeter) measures insulation resistance up to 1000 megohms at 500V AC. As a professional megaohm meter, mega ohmmeter, and megger insulation tester, it works for motors, transformers, HVAC systems and quickly detects defects. It is a must for pros/DIYers using hvac electrical tools and professional hvac service tools Intuitive Display, Efficient Operation:Built-in resistance scale shows insulation status (Good/Normal/Risk) clearly. No complex analysis,judge equipment health fast, simplify tests. This hvac megohmmeter and megameter tester simplifies Insulation Testing, Ideal for HVAC compressor testing and home renovation applications. Portable and Easy Use, Flexible Storage:Comes with soft case for 6 inch leads & meter. Battery powered (2 “C” included). Clear manual,do Insulation Testing anywhere. This portable megger insulation tester is convenient for on-site work with hvac tools and integrates smoothly with hvac service tools kits Durable Design, Tackle Harsh Environments:Double-sided ABS housing resists impacts/wear, endures collisions/friction for tough HVAC tasks. This heavy-duty M500 megohmmeter cuts maintenance costs and supports long term worry free. Ideal for hvac tools clearance and megger testing Wide Applications, Core for Professional Testing:Designed for HVAC, motors, transformers. Covers motor winding tests, compressor tester HVAC, panel/relay checks. Essential for electrical inspection,integral to hvac kits and megger testing with M500 (500V) Overview Brand : FUHUOLU Power Source : Battery Powered Style : M500 INSULATION TESTER MEGOHMMETER Color : BLUE Item dimensions L x W x H : 6.99 x 1 x 6 inches