

⚡ Power up your precision — test smarter, not harder!
The AstroAI Digital Multimeter AM33D is a compact, battery-powered multi-tester designed for professionals and DIY enthusiasts alike. It measures voltage up to 500V, DC current, resistance, and diode functionality with high accuracy. Featuring a backlit LCD, double fuse anti-burn protection, and a silicone cover, it ensures safety and ease of use in any environment. Ideal for automotive, household, and industrial electrical diagnostics, it comes complete with test leads, battery, and user manual, backed by a 1-year warranty.













| ASIN | B01ISAMUA6 |
| Best Sellers Rank | 328 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Multi Testers |
| Brand | AstroAI |
| Colour | Blue |
| Country Of Origin | China |
| Customer Reviews | 4.6 4.6 out of 5 stars (52,965) |
| Included Components | 1 x Multimeter, 1 x Test Leads (Pair), 1 x user manual |
| Item Dimensions | 45 x 139 x 1080 millimetres |
| Item Type Name | AstroAI Digital Multimeter with Ohm Volt Amp and Diode Voltage Tester Meter (Intelligent Anti-burn) |
| Item Weight | 0.15 Kilograms |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Manufacturer | AstroAI |
| Maximum Operating Voltage | 500 Volts |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 2 Volts |
| Model Number | AM33D |
| Power Source | Battery Powered |
| Product Warranty | 1 Year Warranty by AstroAI |
| Specification Met | Iec 61010 |
| Style Name | compact |
| UPC | 756910381981 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
M**D
Great Job
Brilliant, done the job I needed to test both a car battery along with the alternator, can’t go wrong with the price and for the price a sturdy little meter. Oh and added bonus it came with a battery.
G**R
Works straight out of the box
Great item. Easy to use straight out of the box. Good quality with an easy to read screen.
E**M
Cheap and effective
Cheap as chips but works perfectly. Just bought for occasional use but probably ok for more intensive use.
D**L
Great device for troubleshooting and arduino projects
For a low cost multimeter this seems to be durable and well built and to the best of my knowledge works as intended. I purchased this to mainly test the voltage in batteries and do some basic path and fault testing in my arduino projects and so far its worked as intended. I especially like the dedicated battery settings and switching between the main voltage types and found myself using this feature most. Testing AA and AAA bateries to see if there is enough juice to power my project i learned a pretty cool thing. If you wish to get more out of the batteries you use you can switch old ones into lower powered devices and they work fine. Im now saving what i thought were drained batteries and using them in remote controls and clocks to get extra value. Not really the intended use but this has helped me understand a few more priciples of electrical theory and voltage/current requirements in electronics.
M**S
Reliable Cheap Multimeter
Cheap as chips so can't really complain. Quite lightweight but It does the job of voltage detection and buzzing out connections well. DC voltage measurement seems to be accurate. Not really used it for AC voltage or current measurement but no reason to believe it would not work well.
B**N
Worked every time so eary to use good price
Brilliant piece of kit Worked great after hard frostkilled my battery
K**R
Great value multimeter
Very happy with this multimeter, very easy to use and works just as it should and even came with the battery so good value.
H**K
Simple and easy to use
Good basic multimeter, I am no expert but found this super useful and easy to use. Audio beep works well when testing. Unit is lightweight. flip out stand works well but do find I need to lay the unit on it side dependng on what I am testing.
K**.
- FAIT LE JOB👍👍👍 - LES PILES SONT DEJA PLACEE - MESURES CORRECTES - JE PREFERE LES TOUT AUTOMATIQUE 2025
D**L
This AstroAI digital multimeter turned out to be a really solid tool, especially for the price. I picked it up for basic home and DIY electrical checks, and it has handled everything I’ve thrown at it without any issues. Right out of the box, it feels lightweight but well-built, not cheap or flimsy. The display is clear and easy to read, even in low light, and the dial is straightforward, which makes it beginner-friendly while still being useful for more experienced users. I’ve used it to check AC/DC voltage, resistance, continuity, and diodes, and the readings have been consistent and accurate compared to other meters I own. The continuity test responds quickly, which is something I really appreciate when tracing wires or checking connections. Measuring current and resistance is just as simple, and switching between functions is smooth with no lag. For a 2000-count meter, it provides more than enough precision for household electronics, automotive checks, and small projects. Another plus is the safety and convenience factor. The probes are decent quality, and the overall layout makes it hard to mess up if you’re paying basic attention. It’s not overloaded with unnecessary features, which actually makes it easier and faster to use. Overall, this multimeter delivers excellent value, reliable performance, and ease of use. Whether you’re a beginner learning the basics or someone who needs a dependable meter for everyday troubleshooting, this one does the job very well. Definitely deserving of a 5-star Vine review.
A**O
tudo ok
S**O
If you dabble in electronics a bit or even if you don't it is avery helpful tool. This worked great. I can check Voltage, Ampearage of my connections. Check if a charger is working. Check plug poits at home. There are literally thousands of applications. I don't do much but the bit I need works great. Recommended in this price point.
3**D
使用していたテスターが故障したので代替え。 価格の割に機能は十分です。使い勝手もよいです。 OPでワニ口とかあったらよいと思います。
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