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⚡ Master your electrical world with precision and safety!
The AstroAI Digital Multimeter AM33D offers 2000 counts resolution to accurately measure AC/DC voltage, current, resistance, continuity, and diode functionality. Designed with double fuse anti-burn protection and a silicone cover, it ensures user safety during overloads and shocks. Its backlit LCD and data hold features enable easy use in low-light environments, making it perfect for professional and home electrical troubleshooting. Supported by a responsive California-based team and backed by a 3-year warranty, this compact, battery-powered multimeter is a reliable tool for any tech-savvy millennial managing modern electrical challenges.













| ASIN | B01ISAMUA6 |
| Best Sellers Rank | #162 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Multi Testers |
| Brand Name | AstroAI |
| Color | Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (55,921) |
| Included Components | 1 x AstroAI AM33D Digital Multimeter, 1 x 9V 6F22 Battery, 2 x Test Leads, 1 x User Manual |
| Item Dimensions | 1.77 x 5.47 x 42.52 inches |
| Item Type Name | AstroAI Digital Multimeter with Ohm Volt Amp and Diode Voltage Tester Meter (Intelligent Anti-burn) |
| Item Weight | 0.15 kg |
| Lower Temperature Rating | 32 °F |
| Manufacturer | AstroAI |
| Maximum Operating Voltage | 500 volts |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 2 volts |
| Model | AM33D |
| Number of Items | 1 |
| Part Number | MT33D |
| Power Source | Battery Powered |
| Specification Met | Iec 61010 |
| Style Name | compact |
| UPC | 756910381981 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 104 °F |
| Warranty Description | 3 Year Warranty by AstroAI |
D**T
Love this. Easy to use. Quickly tests batteries.
This is really easy to use. I appreciate that I can check all my batteries so far. I’ve been using it for about two months and instead of just tossing batteries that I think aren’t working I know for sure if they’re working or not if they’re dead or not so easy to use simple purchase compact design. I can take it with me like if I go camping or somewhere like that and it’s very lightweight so I like it
T**I
Cost effective and easy to use
Thanks . Easy to use no issues and gave me the necessary readout I needed for troubleshooting a few electrical issues and lamp socket issues . Overall solid tool that will last me for a while doing hobbies and project troubleshooting
P**T
Good general meter
Good, simple meter for around the house/garage and hobby work. Nice size, easy to use and clear display. Well worth the money at the price point.
S**S
Built for the user
Absolutely love this multimeter. I've lived my life with cheap $5 harbor freight multimeters, but doing some dumb diagnosing with it I blew the main fuse inside. I've been using this since 2024. I was able to open it up, get the spec of the fuse (5x20mm .250amp) and swapped the 10 amp fuse for the time being while the replacement is shipped next day. The auto off is super convenient, it beeps before it's gonna shut off. and the beeping for continuity check is super nice for probing harnesses and not having vision of the readout on the meter. I added another in my cart for my next purchase as it warrants me having one in each of my workshop locations. the 9v or 2xAAA battery configuration options thing is super convenient. I feel like a paid reviewer but just have been very happy with it and am going through the time to put in a review
D**N
Pinpointed my RV converter problem in minutes
Bought this to chase down a charging problem on my travel trailer. The batteries weren't taking a charge on shore power, and I needed something to start isolating where the voltage was dropping out. This meter got me there. I checked the AC side coming in, then what was actually reaching the batteries on the DC side, and that's how I narrowed it down to a bad AC to DC converter rather than the batteries or the wiring. The probes feel solid, the dial has good detents so you're not second-guessing the range, and DC readings were steady and consistent. The backlight is a genuinely nice touch. A lot of my testing happened in a dim storage bay and under the trailer, and being able to read the screen without holding a flashlight in my teeth made the job a lot easier. It's light and small enough to live in the truck, so it's become my grab-and-go meter for quick checks. Five stars. It saved me from replacing two 6v deep cycle batteries that were actually fine.
S**R
Reliable product / everyone should have !
All good!
K**Y
Works Great and Simple to Use
Absolutely great! Works very well and is simple to use. Learn some basics about how to use though. Especially measuring DC.
S**M
So far so good!
Got this to replace our one we’ve had and so far it works hopefully it lasts the test of time
R**.
Recomendo
Bom produto . Chegou embalado, funcionando bem.
R**G
Great product
looks good value
3**D
コスパ十分です
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。
M**N
Elektro
Prima product
O**X
Lo recomiendo
Está muy bien , calidad precio . Muy funcional para trabajos sencillos , funciona muy bien y fácil de manejar . Lo recomiendo
Trustpilot
1 week ago
2 months ago