Lennox Y8801 – Supco M500 LED Megohmmeter is a reliable and cost-effective insulation resistance tester designed for HVAC technicians and electrical professionals. This meter provides fast, accurate readings to help verify the condition of motor windings, compressors, and electrical insulation, making it ideal for troubleshooting, preventive maintenance, and service diagnostics.

The Supco M500 measures insulation resistance up to 1000 megohms at 500 VAC and features a clear zone scale that quickly indicates insulation condition, allowing technicians to identify moisture, insulation breakdown, or early motor failure. Its durable, impact-resistant design is built for field use, while the compact form factor makes it easy to carry between job sites.

Test leads store conveniently inside the case, and the unit operates on two C batteries for dependable performance without external power. A soft carrying case is included for added protection and portability. Backed by a one-year manufacturer warranty, this megohmmeter delivers dependable performance at an economical price point.

Specifications:
Brand: Supco
Catalog Number: Y8801
Model / Part Number: M500
Measurement Range: 20 to 1000 megohms
Test Voltage: 500 VAC
Temperature Range: 32°F to 120°F (0°C to 50°C)
Lead Length: 6 inches
Power Source: 2 C batteries (not included)
Gross Weight: 0.8 lb
Warranty: 1 year

This insulation resistance tester is a practical choice for HVAC motor testing, electrical maintenance, and service professionals who need accurate results without the cost of traditional analog megohmmeters.