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  • M500 Megohmmeter Insulation Tester, 500V Digital Megger Meter Measures Up to 1000 MΩ, Portable HVAC Motor & Compressor Insulation Resistance Tester with Test Leads and Carrying Case

M500 Megohmmeter Insulation Tester, 500V Digital Megger Meter Measures Up to 1000 MΩ, Portable HVAC Motor & Compressor Insulation Resistance Tester with Test Leads and Carrying Case

4.5 out of 5 stars (3)
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About this item

  • Accurate 500V Insulation Testing: Measures insulation resistance up to 1000 MΩ at a stable 500V output, providing reliable readings for compressors, motors, wiring, and electrical systems. Helps quickly identify leakage, aging, and other safety concerns.
  • Easy-to-Read Status Indicator: Features a clear analog scale divided into Good, Caution, and Bad zones, allowing users to instantly evaluate insulation condition without complex interpretation. Ideal for both professionals and DIY users.
  • Durable ABS Protective Housing: Built with a double-layer ABS enclosure for excellent impact, abrasion, and drop resistance. Designed to withstand demanding jobsite environments while protecting sensitive internal components.
  • Portable, Field-Ready Design: Engineered for convenient use in any environment, this compact megohmmeter includes a soft carrying pouch for easy storage and transport. Its lightweight design allows quick access during field inspections and provides greater flexibility when working in tight or hard-to-reach areas.
  • Versatile for HVAC and Electrical Work: Engineered for compressors, motor windings, transformers, panels, and control circuits. Effectively detects insulation breakdown, moisture issues, and thermal damage—an essential tool for routine electrical maintenance.
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Product details

  • Parcel Dimensions ‏ : ‎ 18.3 x 10.1 x 6.2 cm; 310 g
  • Date First Available ‏ : ‎ Dec 29 2025
  • Manufacturer ‏ : ‎ ToolSentryX
  • Place of Business ‏ : ‎ toolsentryxservice@outlook.com
  • ASIN ‏ : ‎ B0G31Z1M1V
  • Item model number ‏ : ‎ M500
  • Country of origin ‏ : ‎ China
  • 鶹 Rank: #12,048 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Customer Reviews:
    4.5 out of 5 stars (3)

Product Description

A close-up of electrical wiring and circuit boards in an industrial setting

500V ｜ 20–1000 MΩ ｜ LED Zone Indicators

Professional Insulation Testing Made Simple

Designed for HVAC and electrical applications, this insulation tester offers 500V testing capability and a measurement range up to 1000 MΩ. With intuitive LED zone indicators, it simplifies the process of evaluating insulation integrity for professionals in the field.

M500 Insulation Tester (Specifications）

Product Name M500 Insulation Tester / Megohmmeter
Test Type nsulation Resistance Test
Test Voltage 500 V DC
Measurement Range 20 – 1000 MΩ（Megohms）
Display Type LED Zone Indicators
Calibration No Calibration Required
Applications Hermetic Refrigeration & A/C Compressors, Motors & Appliances, Panel Boards,Relay Control Circuits

  • The M500 helps identify early warning signs of:

    Motor winding insulation breakdown

    Moisture-contaminated compressor insulation

    Hidden damage after overload conditions

  • The M500 doesn’t just give you numbers—it helps you make decisions. With clear LED zone indicators, you instantly know whether insulation is safe, marginal, or dangerous—no calculations required.

  • Yes. The M500 is designed for one-button operation with instant visual results.

  • The M500 measures insulation resistance from 20–1000 megohms at 500V with clear LED indicators. No calibration is required, and its rugged design ensures reliable, long-term professional performance.

Product information

Technical Details

Manufacturer ‎ToolSentryX
Place of Business ‎toolsentryxservice@outlook.com
Part number ‎M500
Item Weight ‎310 g
Parcel Dimensions ‎18.3 x 10.1 x 6.2 cm; 310 g
Item model number ‎M500
Colour ‎Black
Power source type ‎Battery Powered
Measurement Accuracy ‎±5% of reading
Specifications ‎UL 61010-1, IEC 61010-2-030
Included components ‎Megohmmeter, Test Leads, Soft Carrying Pouch, User Manual
Batteries Included? ‎No
Batteries Required? ‎Yes

Additional Information

ASIN B0G31Z1M1V
Customer Reviews
4.5 out of 5 stars (3)

4.5 out of 5 stars
鶹 Rank
Date First Available Dec 29 2025

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M500 Megohmmeter Insulation Tester, 500V Digital Megger Meter Measures Up to 1000 MΩ, Portable HVAC Motor & Compressor Insulation Resistance Tester with Test Leads and Carrying Case

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