Megameter Testers Compared: 3 Megohmmeter Listings
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This review compares three megohmmeter listings, the instrument type that a megameter search is looking for. The listings call the product a megohmmeter or megaohm meter, and this review uses the same term. The source packet also held voltage testers, automotive circuit testers, and camera and network testers, which are different product types and are not ranked here. Each megohmmeter listing states its own test voltages and resistance range, and all three also state voltage measurement functions. The figures come from the packet dated 2026-10-20 and were not checked against live product pages.
Quick answer
The oiuebxe IM2500 lists the highest top test voltage of the three, 2500 V, and a resistance top of 50 GΩ. The ennoLogic eM870M lists five test voltages from 50 V to 1000 V and a resistance span of 50 kΩ to 2 GΩ, with thermocouple temperature and a 10-year warranty. The INFURIDER YF-VC60B+ lists three test voltages, 250 V, 500 V and 1000 V, and a resistance top of 2000 MΩ, with a shoulder strap and a protective cover. For the highest test voltage, the IM2500 gives the most figures; for a stated warranty and temperature function, the eM870M is the one that lists them.
Comparison table
| Listing | ASIN | Test figures the listing states | Power, weight and other details |
|---|---|---|---|
| 2500V Megohmmeter and True RMS Multimeter (IM2500, oiuebxe) | B0FSSB1QF7 | Test voltages 100 V, 250 V, 500 V, 1000 V and 2500 V; resistance up to 50,000 MΩ (50 GΩ) | Battery powered; 1.68 pounds; 7.4 x 3.5 x 1.97 inches; includes multimeter test leads |
| eM870M Insulation Tester (ennoLogic) | B07F1FFNKS | Test voltages 50 V, 100 V, 250 V, 500 V and 1000 V; resistance 50 kΩ to 2 GΩ | Six AAA batteries; 1.23 pounds; thermocouple probe included; 10-year warranty as stated |
| Digital Insulation Resistance Tester (YF-VC60B+, INFURIDER) | B0BWJGGLPZ | Test voltages 250 V, 500 V and 1000 V; resistance up to 2000 MΩ (2 GΩ); DC to 1000 V and AC to 750 V measuring range | Six 1.5 V batteries listed; 1.7 pounds; protective cover and shoulder strap |
oiuebxe 2500V Megohmmeter and True RMS Multimeter (IM2500)
The listing title gives a megohmmeter with a 2500 V test voltage and a 50 GΩ resistance top, and the bullets match those figures. The first bullet states insulation resistance up to 50,000 MΩ at DC test voltages of 100 V, 250 V, 500 V, 1000 V and 2500 V. A function switch moves between the insulation test voltages and the multimeter functions. The listing also describes a True RMS multimeter that measures up to 1500 V AC or DC, resistance, capacitance, continuity, frequency, diode, and data hold.
The spec list gives the style as an auto-ranging insulation tester up to 50 GΩ, a battery power source, and a weight of 1.68 pounds. The dimensions are 7.4 x 3.5 x 1.97 inches. The included components are the IM2500 meter, multimeter test leads, and test leads with alligator clips. The spec list also gives a minimum operating voltage of 100 volts, which is a separate figure from the test voltage steps and is not explained in the listing.
Check the IM2500 megohmmeter listing on Amazon
ennoLogic eM870M Insulation Tester
The eM870M title gives a resistance span of 50k to 2G ohms, five test voltages from 50 V to 1000 V, and a megohmmeter with a multimeter. The first bullet says the unit measures insulation resistance from 50 kΩ to 2 GΩ at test voltages of 50 V, 100 V, 250 V, 500 V or 1000 V, and it describes a large backlit 5000-count LCD. The bullets also list AC and DC voltage and current, true RMS for AC, resistance, continuity, diode test, and temperature with a thermocouple probe.
The spec list gives battery power, a weight of 1.23 pounds, an upper temperature rating of 40 °C, and a minimum operating voltage of 9 volts. The bullets say the unit is powered by six AAA batteries and turns off automatically after 15 minutes, with that feature able to be disabled. The package includes a thermocouple probe, two sets of test leads, alligator clips, a carrying case, and a user manual, and the listing states a 10-year warranty.
Open the eM870M listing on Amazon
INFURIDER Digital Insulation Resistance Tester (YF-VC60B+)
The INFURIDER title names the unit as a digital insulation resistance tester and a megohmmeter, with the model YF-VC60B+ and test voltages of 250, 500 and 1000 V. The first bullet describes a voltage measurement range from 250 V to 1000 V, resistance up to 2000 MΩ, a DC voltage range from 0 to 1000 V, and an AC voltage range from 0 to 750 V. The listing describes a backlit LCD with a maximum display of 1999, a HOLD button, and a protective cover that guards the tester against drops.
The spec list gives battery power, a weight of 1.7 pounds, and a minimum operating voltage of 250 volts. It also lists the standards UL, IEC, CE and RoHS. The spec list gives Included Components as “No,” while the bullets list two test leads, two crocodile clips, a shoulder strap, six 1.5 V batteries and a user manual, so the packing list should be checked before purchase.
See the YF-VC60B+ listing on Amazon
How this review chose its products
The packet held twelve listings of other types, including voltage testers, automotive circuit testers, a camera tester, a water-quality meter, and a network cable tester, along with three megohmmeter listings. Only the megohmmeters are used. The other items measure voltage, circuit continuity, network cable, or water, so they are a different product type and are not ranked here. The packet does not include a price or a rating for any listing, and this review does not add either. No unit was bought or used for this post.
Worked example: comparing the resistance spans
Put the three resistance figures on one scale. The IM2500 states 50,000 MΩ, which is 50 GΩ. The eM870M states 2 GΩ at the top and 50 kΩ at the bottom, so its span runs from 50 kΩ to 2,000,000 kΩ, a top value 40,000 times the bottom. The YF-VC60B+ states up to 2000 MΩ, which is the same 2 GΩ top as the eM870M, and that makes the IM2500 top value 25 times as large as either of the other two (50 GΩ divided by 2 GΩ).
The test-voltage steps show a similar pattern. The eM870M and the YF-VC60B+ both top out at 1000 V. The IM2500 goes to 2500 V, which is 2.5 times the top step of the other two. The listings state a minimum operating voltage of 100 V, 9 V and 250 V in their spec lists. Those numbers are not defined in the listings, so they are shown here without interpretation.
What the listings do not say
None of the three listings states a reading accuracy as a percentage for its resistance range, so accuracy cannot be compared from the listing data. The eM870M bullets describe its power and warranty in detail, but the IM2500 and YF-VC60B+ listings do not state a warranty. The YF-VC60B+ spec list gives no included components, but its bullets do, so the two sources conflict.
The listings also do not say how long each unit takes to charge a test or discharge a capacitor after a test, which matters on cable and motor work. The IM2500 says it has an alarm that alerts the user to live voltage, but it does not state a voltage threshold for that alarm. For more on this type of tester, see the best megger tester guide, the best megohmmeter tester guide and the megohmmeter guide.
Frequently asked questions
Which megohmmeter listing states the highest test voltage?
The IM2500 states a 2500 V test voltage, which is the highest of the three listings.
What resistance span does the eM870M state?
The bullets state insulation resistance from 50 kΩ to 2 GΩ, at test voltages of 50 V, 100 V, 250 V, 500 V or 1000 V.
Does the YF-VC60B+ come with its batteries?
The bullets list six 1.5 V batteries as included, but the spec list gives Included Components as No, so the packing list should be checked on the product page.
Does any listing state a warranty?
Yes. The eM870M bullets state a 10-year warranty. The other two listings do not state one in the data supplied.
Conclusion
Among the three megohmmeter listings in this packet, the IM2500 states the highest test voltage and resistance top, while the eM870M states the most functions and a warranty. The YF-VC60B+ states a 2 GΩ top and three test voltages with a protective cover. The choice depends on whether the job needs a test voltage above 1000 V, which only the IM2500 lists. Check the stated figures against the equipment you test before buying.
Listing links
These links go to the three listings reviewed above.
