--- product_id: 2356188 title: "M500 Electronic Megohmmeter, 0 to 1000 Megohms | Electrical Insulation Tester for HVAC, Refrigerator Compressors, Motors, Portable Appliances, Relay Circuits, with Case" brand: "supco" price: "769.88 DT" currency: TND in_stock: true reviews_count: 8 category: "Supco" url: https://www.desertcart.tn/products/2356188-m500-electronic-megohmmeter-0-to-1000-megohms-electrical-insulation-tester store_origin: TN region: Tunisia --- # 500V high-voltage testing Measures up to 1000 MΩ Battery-powered portability M500 Electronic Megohmmeter, 0 to 1000 Megohms | Electrical Insulation Tester for HVAC, Refrigerator Compressors, Motors, Portable Appliances, Relay Circuits, with Case **Brand:** supco **Price:** 769.88 DT **Availability:** ✅ In Stock ## Summary > ⚡ Test Like a Pro, Anywhere You Go! ## Quick Answers - **What is this?** M500 Electronic Megohmmeter, 0 to 1000 Megohms | Electrical Insulation Tester for HVAC, Refrigerator Compressors, Motors, Portable Appliances, Relay Circuits, with Case by supco - **How much does it cost?** 769.88 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/2356188-m500-electronic-megohmmeter-0-to-1000-megohms-electrical-insulation-tester) ## Best For - supco enthusiasts ## Why This Product - Trusted supco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **HVAC & Beyond:** Engineered for hermetic compressors, motors, pumps, and complex electrical systems—your all-in-one insulation tester. - • **Compact & Portable:** Rugged handheld design with soft carrying case lets you take professional-grade testing anywhere on the job. - • **Precision at 500 Volts:** High-voltage testing ensures pinpoint insulation diagnostics for critical HVAC and industrial equipment. - • **Magnetic Alligator Clips:** Hands-free testing with magnetic leads that snap securely onto terminals—work smarter, safer, faster. - • **Up to 1000 Megohms Range:** Capture ultra-high resistance readings with crystal-clear LED display for confident decision-making. ## Overview The Supco M500 Electronic Megohmmeter is a compact, battery-powered insulation tester delivering precise 500V measurements up to 1000 megohms. Featuring a bright LED display and magnetic alligator clips, it offers fast, hands-free testing ideal for HVAC technicians and electrical professionals. Its rugged portability and versatile applications—from compressors to circuit boards—make it an essential tool for preventing costly equipment failures. ## Description The Supco M500 Megohmmeter is a compact, 500 volt battery-operated tool designed for accurate insulation resistance measurement in electrical systems when properly connected and used according to product instructions. Featuring a bright LED display and durable handheld design, it is ideal for field use. The Supco Megohmmeter unit serves as a dependable HVAC meter for evaluating hermetic compressors, inverter compressors, condenser and blower motors, and refrigerator compressor systems. Additional applications include: circulator pumps, sump pumps, garbage disposal motors, and insulation testing of damaged wiring. It stands out among electrical meters for testing by delivering precise readings up to 1000 megohms with simple operation. This megohmmeter insulation tester also functions as a resistance meter for checking insulation in transformers, circuit boards, and wiring. It works effectively as a compressor tester and motor tester, helping identify insulation issues before equipment failure. Part of essential electronic test equipment, it can also be used as a portable appliance tester and relay circuit tester for panel boards, control circuits, and conduit wiring. Runs on C size batteries (not included) it comes with 6” test leads that store in the supplied soft carrying case. It is built for convenience and portability. Specifications Indicator range: 20 to 1,000 Megohms Applied voltage: 500 volts Display: LED’s Dimensions: 3-3/8” x 6-3/8” x 1-3/4” Power source: (2) “C” batteries (not included) Test leads: 24” long with alligator clip and magnet Review: Magnets on ends of terminal leads are an amazing feature - I bought this Supco M500 tester to validate the motor on our sander. I was blown away by the portability, compactness, and the magnets on the ends of the leads. I also bought a competing unit with higher voltage and a display to tell me actual values, but I am very conflicted because the thought that went into this Supco unit is so great. In terms of a unit that is quick, easy to use, this Supco device wins, hands down. I could see the shorter leads being an issue eventually, but they're that short because they fold up in the back of the unit. I can't stress enough how convenient the magnets on the end of the aligator clips are. I can pop them onto screw terminals and very quickly test through a bunch of circuits without having to hold my fingers in the danger zone or question whether I slipped and caused an incorrect reading. Review: Great condition!!! - Came as advertised works well ## Features - HIGH VOLTAGE ACCURATE TESTING: This 500 volt megohmmeter measures up to 1000 megohms with a clear LED display, supporting precise electrical testing for insulation in appliances, panel boards, relay control circuits, motors, and more - IDEAL FOR HVAC APPLICATIONS: Designed for every HVAC technician using HVAC tools, this insulation tester is ideal for diagnosing hermetic compressors, including refrigerator compressor units and inverter compressors - PORTABLE BATTERY OPERATED DESIGN: This handheld electronic tester runs on C size batteries (not included) and features a rugged build with a soft carrying case, allowing convenient insulation checks across condenser and blower motors in the field - FAST AND EASY TO READ MEASUREMENTS: The insulation resistance tester includes a clear zone scale and bright LED display to assess insulation condition in ground loop systems, conduit wiring, and complex electrical installations - CONSISTENT FIELD PERFORMANCE: The Supco M500 evaluates insulation in circuit boards, transformers, and industrial equipment; Additional applications include circulator pumps, sump pumps, garbage disposal motors, and testing damaged wiring ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004OMAWIA | | Best Sellers Rank | #16,171 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Insulation Resistance Meters | | Brand | Supco | | Brand Name | Supco | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 1,592 Reviews | | Global Trade Identification Number | 00687152021116 | | Item Dimensions | 9.3 x 6 x 1.8 inches | | Item dimensions L x W x H | 9.3 x 6 x 1.8 inches | | Manufacturer | Supco | | Measurement Type | Ohmmeter | | Min. Operating Voltage | 500 volts_of_alternating_current | | Minimum Operating Voltage | 500 volts_of_alternating_current | | Model | M5462 | | Number of Items | 1 | | Part Number | M500 | | Power Source | Battery Powered | | Style | Electronic | | Style Name | Electronic | | UPC | 687152021116 696738035638 094700775078 | | Unit Count | 1 Count | | Upper Temperature Rating | 120 °F | ## Product Details - **Brand:** Supco - **Color:** Black - **Item dimensions L x W x H:** 9.3 x 6 x 1.8 inches - **Power Source:** Battery Powered - **Style:** Electronic ## Images ![M500 Electronic Megohmmeter, 0 to 1000 Megohms | Electrical Insulation Tester for HVAC, Refrigerator Compressors, Motors, Portable Appliances, Relay Circuits, with Case - Image 1](https://m.media-amazon.com/images/I/81TwSMNtS+L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Magnets on ends of terminal leads are an amazing feature *by A***G on June 1, 2026* I bought this Supco M500 tester to validate the motor on our sander. I was blown away by the portability, compactness, and the magnets on the ends of the leads. I also bought a competing unit with higher voltage and a display to tell me actual values, but I am very conflicted because the thought that went into this Supco unit is so great. In terms of a unit that is quick, easy to use, this Supco device wins, hands down. I could see the shorter leads being an issue eventually, but they're that short because they fold up in the back of the unit. I can't stress enough how convenient the magnets on the end of the aligator clips are. I can pop them onto screw terminals and very quickly test through a bunch of circuits without having to hold my fingers in the danger zone or question whether I slipped and caused an incorrect reading. ### ⭐⭐⭐⭐⭐ Great condition!!! *by N***A on July 26, 2026* Came as advertised works well ### ⭐⭐⭐⭐⭐ Reliable, Accurate, and Built for the Job *by M***N on June 23, 2025* As a technician, having a dependable megohmmeter is a must — and this one delivers. Right out of the box, the build feels solid, with a rugged, rubberized housing that gives confidence it can handle the field. I’ve used it for testing motors, compressors, and insulation on wiring, and the readings are consistent and accurate every time. The display is bright and easy to read, even outdoors. I also appreciate the auto-discharge feature after testing — a safety must. The leads are quality too, with strong alligator clips that hold securely during testing. ## Frequently Bought Together - Supco M500 Insulation Tester/Electronic Megohmmeter with Soft Carrying Case, 0 to 1000 megohms Black - Supco Tradefox Jumper King Bypass Low Voltage Thermostat to Activate The Circuit - Supco MFD10 Digital Capacitor Tester with LED Display, 0.01 to 10000mF Range, 5% Accuracy --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/2356188-m500-electronic-megohmmeter-0-to-1000-megohms-electrical-insulation-tester](https://www.desertcart.tn/products/2356188-m500-electronic-megohmmeter-0-to-1000-megohms-electrical-insulation-tester) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-21*