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AstroAI Digital Multimeter, TRMS 4000 Counts Volt Meter (Manual and Auto Ranging); Measures Voltage Tester, Current, Resistance, Continuity, Frequency; Tests Diodes, Temperature (Red)
AstroAI

AstroAI Digital Multimeter

Bottom line: The AstroAI Digital Multimeter ($19.54 on Amazon as of 2026-10-06): True RMS on both AC current and voltage, not averaging; main trade-off: 4000 counts limits resolution versus 6000- or 20000-count meters.

$19.54

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Buy on Amazon — $19.54 Also on eBay → Compare to similar tools & maintenance

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For PC and retro-hardware cleaning and maintenance tools, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ True RMS on both AC current and voltage, not averaging
  • ✓ Auto-ranging plus manual ranging when you want to fix the scale
  • ✓ Two ceramic fuses (F500mA/600V, F10A/600V) and overload protection on all ranges
  • ✓ Backlit LCD, Data Hold, and kickstand for one-handed benchtop probing

Cons

  • ✗ 4000 counts limits resolution versus 6000- or 20000-count meters
  • ✗ No listed data logging or PC connectivity for recorded sessions
  • ✗ Temperature needs the bundled probe, so you lose a lead slot
  • ✗ 600V fuse rating caps it below CAT III/IV industrial jobs

Manufacturer description

The AstroAI TRMS Digital Multimeter is the bench tool you reach for when a retro build refuses to boot and you need to know whether the AT power supply is actually delivering rails. It measures AC/DC voltage, AC/DC current, resistance, continuity, capacitance, frequency, and temperature, and it tests diodes, so one meter covers most of what vintage PC troubleshooting throws at you. The 4000-count display is backed by True RMS, which matters when you are reading AC current and voltage rather than guessing from an averaging meter. Auto-ranging gets you a number fast, and manual ranging is…

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SpecPicks Verdict

SpecPicks scored AstroAI Digital Multimeter using a rating × review-volume × price-fit model applied to published specs and reviews across the tools & maintenance category. AstroAI's tools & maintenance lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for tools & maintenance: PC towers accumulate significant dust in 3–6 months, so cleaning frequency drives cordless vs. canned-air tradeoff decisions. Match the device's RPM or CFM rating to your case size, and confirm battery runtime covers a full tower cleaning before ordering. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does this multimeter do True RMS or is it an averaging meter?

It is True RMS, and AstroAI lists it for both AC current and AC voltage, so non-sinusoidal AC reads accurately rather than being estimated.

Can it measure capacitance and frequency, or just volts and ohms?

It covers AC/DC voltage, AC/DC current, resistance, continuity, capacitance, frequency, and temperature, and it also tests diodes.

Is it auto-ranging or do I have to pick the range myself?

Both. It auto-ranges by default and supports manual ranging when you want to lock a specific scale.

What kind of fuse protection does it have?

Two integrated explosion-proof ceramic fuses rated F500mA/600V and F10A/600V, plus overload protection on all ranges.

What is the warranty on the AstroAI multimeter?

AstroAI provides a 3-year warranty. Check the product listing for current terms and registration details.

Key Features

  • WIDE RANGE of tests for AC/DC Voltage, AC/DC Current, Resistance, Continuity, Capacitance, Frequency and Temperature; Tests Diodes
  • PROFESSIONAL LEVEL features include Auto-Ranging capability, and True RMS for measuring both AC Current and Voltage
  • EASE OF USE: Convenient features like Data Hold, Large LCD Backlit Screen, Kickstand, and Low Battery Indicator make taking and recording measurements easier than ever before
  • IDEAL FOR COMMERCIAL settings where it can handle the demands of a long workday, from the durable exterior to the wide range of heavy-duty capabilities
  • SAFETY FIRST: Two integrated fuses rated at F500mA/600V and F10A/600V; Explosion-proof ceramic fuses provide maximum safety; The fuses can protect the multimeter effectively; Overload protection on all ranges. 3 Year Warranty provided by AstroAI

Full Specifications

BrandAstroAI
ColorRed
ModelASIMT132A
StyleDigital
Style NameDigital
Unit Count1.0 Count
Part Number132A
Power SourceBattery Powered
Item Type NameAstroAI Digital Multimeter, TRMS 4000 Counts Volt Meter Manual and Auto Ranging; Measures Voltage Tester, Current, Resistance, Continuity, Frequency; Tests Diodes, Temperature, Red
Item Dimensions6.11 x 4.25 x 1.53 inches
Measurement TypeMultimeter, Voltmeter
Specification MetCE, RoHS, UL
Included Components1
Global Trade Identification Number00700713359227
Full listing titleAstroAI Digital Multimeter, TRMS 4000 Counts Volt Meter (Manual and Auto Ranging); Measures Voltage Tester, Current, Resistance, Continuity, Frequency; Tests Diodes, Temperature (Red)

Ready to buy?

AstroAI Digital Multimeter, TRMS 4000 Counts Volt Meter (Manual and Auto Ranging); Measures Voltage Tester, Current, Resistance, Continuity, Frequency; Tests Diodes, Temperature (Red) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $19.54

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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AstroAI Digital Multimeter, TRMS 4000 Counts Volt Meter (Manual and Auto Ranging); Measures Voltage Tester, Current, Resistance, Continuity, Frequency; Tests Diodes, Temperature (Red)
$19.54
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