Best Digital Multimeter: Six Picks by Counts and CAT
As an Amazon Associate we earn from qualifying purchases. Details
A digital multimeter is a meter that measures voltage, current and resistance on one display. The two numbers that separate the listings here are the count figure, which sets how finely the display steps, and the CAT rating, which states the circuit category and voltage the meter is built for. The search term names an ALLOSUN model, but none of the ALLOSUN listings in our set is that model, so this post compares six digital multimeters from the set, one of them an ALLOSUN. Research figures were checked on 11 October 2026, and the ALLOSUN pick on 18 October 2026.
Quick answer: for the widest rated voltage, the Fluke 87V and the UNI-T UT161E both list a 1000V ceiling with CAT III and CAT IV ratings. For the finest display in this set, the UNI-T lists 22,000 counts, and the TESMEN and DEASOMIYE list 6000.
The six multimeters at a glance
| Multimeter | Counts (as listed) | Rating or ceiling (as listed) | Notes from the listing |
|---|---|---|---|
| Fluke 87V (B0002YFD1K) | 6000 to 20,000, switchable | CAT III 1000V, CAT IV 600V | Measures 1000 V AC and DC, peak capture, 10 year warranty |
| UNI-T UT161E (B0B1CZBPX7) | 22,000 | CAT III 1000 V, CAT IV 600 V | True RMS, USB data, backlight, Max/Min |
| TESMEN TSM-599 (B0D5LSQL58) | 6000, TRMS | CSA and ETL, no CAT figure in the fields | Auto and manual modes, color LCD |
| DEASOMIYE T21D (B0B31YC3YD) | 6000, TRMS | Overvoltage category III 600V (bullet), up to 600V in the style name | Auto-ranging, non-contact voltage, thermocouple |
| Neoteck VC746A (B0CY1S4JZT) | 2000 | CAT III 600V | Manual or auto range, live wire, temperature probe |
| ALLOSUN EM3082 (B07PHDJRP3) | 1999 maximum reading | Not given | Pocket size, buzzer, polarity indication |
How we chose these six
We kept multimeters whose listing states a count figure and a rating, and we spread the set across the count levels so that the reader can compare them. Each card below uses the listing’s own figures. Where a listing gives no rating, we say so rather than fill it in.
- Counts: the display count the listing states. A higher count gives finer steps on the same range.
- Rating: the CAT category and voltage in the specs field or bullets, as written.
- Features: auto or manual ranging, live wire detection and the other functions the listing names.
Some candidates did not make the six. The AstroAI clamp meter (B0DB23PPHL) is a clamp meter first, and it cannot test DC current. The NJTY T3 gives 4000 counts, and the Lscsdf kit lists 6000 counts without a rating. The Innova 3340 is aimed at automotive circuits. The ALLOSUN EM3218A listing gives no count figure, so we used the EM3082, which states its reading limit.
1. Fluke 87V Industrial Digital Multimeter
The Fluke 87V is listed as an industrial true RMS multimeter that measures up to 1000 V AC and DC. Its bullets give a switchable display resolution of 6000 to 20,000 counts, and they say the meter captures intermittents as fast as 250 µS with peak capture. The listing gives a CAT III 1000V and CAT IV 600V safety rating and an operating altitude of 2000 m. It includes TL75 test leads, AC175 alligator clips, an 80BK temperature probe and a holster. The specs field gives a 10 year warranty, a weight of 1.3 pounds and an item size of 9.49 x 6.5 x 3.5 inches.
2. UNI-T UT161E Digital Multimeter
The UT161E is listed with 22,000 counts, the highest count figure in this set. Its bullets say it measures AC and DC voltage up to 1000 V and AC and DC current up to 20 A, with resistance, capacitance, frequency and duty cycle. The listing gives a CAT III 1000 V and CAT IV 600 V rating. It also states an analog bar, a USB data link, a backlight, Max/Min and a relative mode. The bullets mention a USB cable for a PC, while the specs field names a Bluetooth adapter (UT-D07B) for PC. The two accessories are not the same, so check which one comes in the box. The item weighs 1.5 pounds.
Check the UNI-T UT161E on Amazon
3. TESMEN TSM-599 Smart Digital Multimeter
The TSM-599 is a true RMS meter with 6000 counts. Its listing describes two modes. In auto mode it measures DC and AC voltage, resistance and continuity without a dial setting. In manual mode it adds DC and AC current, diode, capacitance, Hz%, temperature, non-contact voltage and live wire. The bullets say a 10A/250V fuse guards the current ranges, and that the silicone casing is insulated. The listing says the meter turns off after 15 minutes of inactivity and has a color LCD with an analog bar. The specs field gives CSA and ETL marks but no CAT figure, and the package includes four AAA batteries.
Check the TESMEN TSM-599 on Amazon
4. DEASOMIYE T21D Auto-Ranging Multimeter
The T21D is a true RMS auto-ranging meter with 6000 counts. Its bullets say it measures non-contact voltage, AC and DC voltage and current, resistance, continuity, frequency, capacitance, diode, temperature and a battery test. The listing says the meter passed overvoltage category III 600V standards and uses double ceramic fuses. The style name reads up to 600V and 10A. The specs field gives a weight of 300 g and a size of 2.68 x 5.51 x 1.69 inches. The listing mentions a 30-day manufacturer guarantee and includes a thermocouple, two safety tubes and three AAA batteries.
Check the DEASOMIYE T21D on Amazon
5. Neoteck VC746A Digital Multimeter
The VC746A is a 2000-count meter. Its listing gives CAT III 600V and CE and RoHS marks. The bullets state DC voltage accuracy of ±(0.5%+4) and AC voltage accuracy of ±(0.8%+6), and say the meter can switch between manual and automatic ranging. It turns off after 15 minutes without operation, and the list of functions includes live wire, NCV, temperature and a duty cycle reading. The included items are the meter, a test probe, a temperature probe, an alligator clip and a cloth pouch. The item weighs 195 g and measures 5.51 x 2.83 x 1.46 inches.
Check the Neoteck VC746A on Amazon
6. ALLOSUN EM3082 Pocket Multimeter
The EM3082 is the pocket-size pick in this set. Its bullets say the 3 1/2-digit LCD has a maximum reading of 1999, which is the lowest count figure of the six. It measures DC and AC voltage, DC and AC current, resistance, diode and continuity. The listing names a built-in buzzer, polarity indication, data hold and auto power-off. It runs on a 1.5 V LR44 button cell, and the bullet says to remove the battery insulation before use. The specs field gives a weight of 3.5 ounces, a size of 5.7 x 2.2 x 0.9 inches and a 1 year warranty. The listing gives no CAT rating.
Check the ALLOSUN EM3082 on Amazon
Worked example: how fine is each display step?
A display step is the full-scale value of a range divided by its count. The listings do not give full-scale figures for every setting, so the arithmetic below assumes a 1000 V full-scale range for the Fluke only. On a 1000 V range, a 6000-count display steps by about 0.17 V (1000 divided by 6000). On the Fluke’s 20,000-count setting, the same range steps by 0.05 V (1000 divided by 20,000). Check the range scale on the meter before you rely on the step size.
For a rated ceiling, take an 800 V circuit. Among the six, only the Fluke and the UNI-T list a 1000 V ceiling. The DEASOMIYE style name reads up to 600V, and the Neoteck lists CAT III 600V. The TESMEN and the ALLOSUN give no voltage ceiling in their fields. A 800 V reading is therefore inside the Fluke and UNI-T figures and outside the 600 V figures of the other listings that state one.
What the listings do not say
None of the listings reports an independent accuracy test. The Fluke’s 250 µS capture figure and the Neoteck’s accuracy bands are the sellers’ own statements. The UNI-T’s Bluetooth and USB accessories are described in different fields. The TESMEN and ALLOSUN listings give no CAT rating in the fields we read, so do not assume a rating from the look of the meter. Check the rating and the accessories on the box before you buy.
Frequently asked questions
Does a higher count number mean a better meter?
A higher count gives finer steps on the same range, but the count alone does not show accuracy. The Neoteck lists accuracy bands, the Fluke and UNI-T list CAT ratings, and none of the listings gives a test result.
Which of these meters lists a 1000 V ceiling?
The Fluke 87V and the UNI-T UT161E both list a 1000 V ceiling, with CAT III and CAT IV ratings. The DEASOMIYE, Neoteck and the other listings give lower figures or none.
Which of these meters ranges automatically?
The DEASOMIYE T21D is described as auto-ranging, and the TESMEN TSM-599 runs in an auto mode. The Neoteck VC746A can switch between manual and automatic ranging, and the ALLOSUN EM3082 title says auto range.
Why do some listings give no CAT rating?
The TESMEN and ALLOSUN listings give safety marks in their fields, but no CAT category in the fields we read. A CAT rating states the circuit category and voltage a meter is built for, so look for it on the meter or the package before you use the meter on mains circuits.
Is the ALLOSUN model in the search term in this set?
No. The search term names an ALLOSUN model, and that model is not among the listings we checked. The ALLOSUN EM3082 is the closest ALLOSUN listing in this set. Its listing gives a 1999 maximum reading and no CAT rating.
Conclusion
For a meter rated to 1000 V, the Fluke 87V and the UNI-T UT161E are the two listings to compare, with the UNI-T giving the higher count figure. For 6000-count meters, the TESMEN TSM-599 (auto and manual modes) and the DEASOMIYE T21D (auto-ranging) are the closer fit. For a small pocket meter, the ALLOSUN EM3082 is the one to look at. Check the rating and the count against the circuits you will test. For related reading, see best multimeter, best multi meters, best hand-held digital multimeter, and best auto-ranging digital multimeter.
Fluke 87V on Amazon · UNI-T UT161E on Amazon · TESMEN TSM-599 on Amazon · DEASOMIYE T21D on Amazon · Neoteck VC746A on Amazon · ALLOSUN EM3082 on Amazon
