--- product_id: 18881614 title: "- VAD78 Digital Insulation Resistance Tester - Accurate Megohm Meter for DC/AC Voltage Testing (20-1500V, 20-750V) and Resistance Measurement (0-5000 Megohms)" brand: "leagy" price: "€ 135.26" currency: EUR in_stock: true reviews_count: 13 category: "Leagy" url: https://www.desertcart.it/products/18881614-vad78-digital-insulation-resistance-tester-accurate-megohm-meter-for-dc store_origin: IT region: Italy --- # 20-1500V DC & 20-750V AC range 0-5000 MΩ ultra-wide resistance range Dual power: battery & 12V adapter - VAD78 Digital Insulation Resistance Tester - Accurate Megohm Meter for DC/AC Voltage Testing (20-1500V, 20-750V) and Resistance Measurement (0-5000 Megohms) **Brand:** leagy **Price:** € 135.26 **Availability:** ✅ In Stock ## Summary > ⚡ Empower Your Electrical Insight — Test Smarter, Work Safer! ## Quick Answers - **What is this?** - VAD78 Digital Insulation Resistance Tester - Accurate Megohm Meter for DC/AC Voltage Testing (20-1500V, 20-750V) and Resistance Measurement (0-5000 Megohms) by leagy - **How much does it cost?** € 135.26 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/18881614-vad78-digital-insulation-resistance-tester-accurate-megohm-meter-for-dc) ## Best For - leagy enthusiasts ## Why This Product - Trusted leagy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety-First Design:** Audible high-voltage alarms, automatic discharge in 1 second, and ≥1mA short-circuit current protect you and your equipment. - • **Ergonomic & On-the-Go Ready:** Lightweight with neck strap holes for hands-free operation, perfect for field engineers and maintenance pros. - • **Crystal-Clear Backlit Display:** Large HD LCD with backlight ensures effortless readings even in dim or dark environments. - • **Power Flexibility & Longevity:** Operates on batteries or external 12V adapter with smart auto-off and low battery alerts for uninterrupted workflow. - • **Precision Voltage & Resistance Mastery:** Accurately tests DC/AC voltage up to 1500V and insulation resistance up to 5GΩ for flawless diagnostics. ## Overview The LEAGY VAD78 is a professional-grade digital insulation resistance tester designed for precise measurement of DC/AC voltages (20-1500V DC, 20-750V AC) and insulation resistance up to 5000 Megohms. Featuring a large backlit LCD for clear readings, dual power options (battery and 12V adapter), and safety features like audible alarms and automatic discharge, it’s ideal for electricians, maintenance engineers, and quality inspectors seeking reliable, portable, and efficient electrical testing solutions. ## Description LEAGY VAD78 Digital Insulation Resistance Tester - Accurate Megohm Meter for DC/AC Voltage Testing (20-1500V, 20-750V) and Resistance Measurement (0-5000 Megohms): desertcart.com: Industrial & Scientific Review: Great product at a tenth of the price of some ... - Works as described. Though batteries are shown in picture, they are not included due to airline security. No problem as this inexpensive unit is well worth six batteries. I used it to extend my warranty on Schluter Ditra Heat from 10 to 15 years. It also test up to 750V AC using the two center plugs. The outside plugs are for insulation tests. There is a YouTube video showing correct operation and also one showing incorrect operation. Though the instructions are a little hard for some, you can figure it out. Great product at a tenth of the price of some meters. Also arrived on time with desertcart Prime. Thanks. Review: Excellent Megger! - I wanted a megger, without spending a zillion dollars on one to do basic troubleshooting of broken insulation on wires. It does indeed work and is well within specification for basic use. Glad I got it to add to my arsenal of testers. I also like the fact you can use a 12v wall socket to operate it too (not included!). ## Features - The insulation resistance tester features voltage measurement range from 250V to 1000V, resistance range from 0.1MΩ to 5GΩ, DC voltage range from 20 to 1500V, and AC voltage range from 20 to 750V (45~1kHz). It has range selection, data hold function, and accurate reading, which meets the needs of electricity and household maintenance. - Large LCD screen with backlit display, high-definition LCD display, maximum display of 9999, clear and uniform characters, with unit symbols displayed. Backlight allows for use in low light or dark environments. The backlight can be turned on or off, providing energy-saving options. - The instrument can be powered by both batteries and an external power source through a DC12V power adapter jack. With the adapter, there's no need to worry about running out of power. - Low battery warning display, the instrument will automatically power off after 15 minutes of inactivity. With long battery life and an audible alarm when high voltage output is detected, safety and efficiency are ensured. The short-circuit current is ≥1mA. The automatic discharge time when the test is disconnected is 1 second. - Suitable for various environments: The LEAGY VAD78 insulation resistance tester with a strap design, has strap holes on both sides of the instrument, which can be hung around the neck for operation. The accessory includes a strap. - LEAGY VAD78 Insulation Tester is widely used for measuring the insulation resistance of electrical equipment and insulation materials, such as transformers, motors, cables, switches, and appliances, as well as for maintenance, testing, and validation of various electrical equipment. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00O14LDKW | | Best Sellers Rank | #251,078 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #40 in Insulation Resistance Meters | | Brand Name | LEAGY | | Color | Black | | Customer Reviews | 4.4 4.4 out of 5 stars (343) | | Item Dimensions | 4.1 x 2.8 x 6.5 inches | | Item Weight | 1.4 Pounds | | Manufacturer | LEAGY | | Measurement Type | Ohmmeter | | Minimum Operating Voltage | 50 Volts | | Model | VAD78 | | Power Source | Battery Powered | | Specification Met | CE | | Style Name | Digital | | UPC | 705554036757 798167982467 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 40 Degrees Celsius | ## Product Details - **Brand:** LEAGY - **Color:** Black - **Item Weight:** 1.4 Pounds - **Power Source:** Battery Powered - **Style:** Digital ## Images ![- VAD78 Digital Insulation Resistance Tester - Accurate Megohm Meter for DC/AC Voltage Testing (20-1500V, 20-750V) and Resistance Measurement (0-5000 Megohms) - Image 1](https://m.media-amazon.com/images/I/71a2y2xqDCL.jpg) ## Questions & Answers **Q: Its this a meghometer?** A: Yes, the product is a meghometer. **Q: When checking a 3 phase motor how does one hook up to the leads?** A: You would have to test each phase (wire) individually, as a megger is meant to test one single conductor at a time. The (E) lead is your ground and your (L) lead is attached to the conductor you would like to test. Any reading other than basically zero resistance is usually bad. **Q: So how does this differ from the more $$ fluke and megger brands? i have a fluke 87 but need to test insul on some 1/0 wiring i pulled in my house.** A: It doesn't doesn't come with the name recognition (and MSRP) of Fluke, nor does it come with the same build quality, overall performance or certifications of the name brands. If you need a meter like this for every day professional use go with a name brand. For occasional use by hobbyists / DIY'ers / homeowners, this one will do the job. **Q: just purchased and obtained 8 AA batteries. The last slot for 2 batteries has no contacts on the end? So it should only need 6 batteries?** A: Correct. The same outer case is used for different types of meters that might need the extra contacts and more batteries. Just a cost saving measure for the manufacturer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product at a tenth of the price of some ... *by A***. on July 11, 2017* Works as described. Though batteries are shown in picture, they are not included due to airline security. No problem as this inexpensive unit is well worth six batteries. I used it to extend my warranty on Schluter Ditra Heat from 10 to 15 years. It also test up to 750V AC using the two center plugs. The outside plugs are for insulation tests. There is a YouTube video showing correct operation and also one showing incorrect operation. Though the instructions are a little hard for some, you can figure it out. Great product at a tenth of the price of some meters. Also arrived on time with Amazon Prime. Thanks. ### ⭐⭐⭐⭐⭐ Excellent Megger! *by D***5 on August 11, 2024* I wanted a megger, without spending a zillion dollars on one to do basic troubleshooting of broken insulation on wires. It does indeed work and is well within specification for basic use. Glad I got it to add to my arsenal of testers. I also like the fact you can use a 12v wall socket to operate it too (not included!). ### ⭐⭐⭐⭐ Read this to figure out how to use it *by O***R on November 9, 2019* This is a great bargain if you've got something that seems to have a short and you need to diagnose it. In my case I have a solar panel array and some of the panels are failing. I'm going to use this to find the bad panels. You need this over a regular voltmeter because this generates the 250-1000 volts necessary to reveal the failure instead of the 9V of a regular meter. Some faults will only show with that high of a voltage. You can even see sparks as you connect the meter. The manual is terrible. I did find a good Youtube video on it, but here's the short version. To test for insulation failure, connect the probes to the outer two connectors - L & E. Select the voltage 250,500,1000. Press the button to test. You can twist to lock it on, but you risk being zapped. Some faults will only show when the device is exposed to water, as is the case with my solar panels. You should connect one lead to either the positive or negative. The other lead should go to the case or ground of the item being tested. The fault may be on either positive or negative so test both. Interesting note for solar panels - you must short the positive & negative leads because a solar panel acts like a battery. The meter works by applying a voltage and checking for current flow so the presence of voltage and current will interfere. With the leads shorted together (you must connect them with a sacrificial switch to avoid damaging connectors) you can then test both leads together against the panel case. The inner two leads will test AC voltage but only if you press the 750VAC button next to the DC test voltage buttons. I did test the voltages with another meter and they are pretty accurate. ## Frequently Bought Together - LEAGY VAD78 Digital Insulation Resistance Tester - Accurate Megohm Meter for DC/AC Voltage Testing (20-1500V, 20-750V) and Resistance Measurement (0-5000 Megohms) - ATOPLEE 3 Phase Sequence Presence Rotation Tester Indicator Detector Meter with LED and Buzzer 60V~600V (3 Phase AC) - Klein Tools ET600 Multimeter, Megohmmeter Insulation Tester, 4000 Ohms Resistance, 125V/250V/500V/1000V, Auto-Ranging TRMS Multimeter --- ## 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.it/products/18881614-vad78-digital-insulation-resistance-tester-accurate-megohm-meter-for-dc](https://www.desertcart.it/products/18881614-vad78-digital-insulation-resistance-tester-accurate-megohm-meter-for-dc) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-05*