








⚡ Power Your Projects with Confidence and Style!
The AstroAI Digital Multimeter AM33D offers professional-grade 2000 counts accuracy for measuring voltage, current, resistance, continuity, and diode functionality. Designed with safety in mind, it features double fuse anti-burn protection and a durable silicone cover. Its backlit LCD and continuity buzzer enable easy use in dim environments, while smart features like auto shutoff and data hold optimize battery life and usability. Perfect for DIYers and professionals alike, it comes with a 1-year warranty and responsive California-based customer support.













| ASIN | B01ISAMUA6 |
| Best Sellers Rank | #144 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 (53,901) |
| 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 | 253 Grams |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Manufacturer | AstroAI |
| Maximum Operating Voltage | 500 Volts |
| Measurement Type | Multimeter, Voltmeter |
| Minimum Operating Voltage | 2 Volts |
| Model | AM33D |
| Power Source | Battery Powered |
| Specification Met | Iec 61010 |
| Style Name | Multimeter |
| UPC | 756910381981 |
| Unit Count | 1.00 Count |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
| Warranty Description | 1 Year Warranty by AstroAI |
C**C
DIY value
Easy to use A must for Diyers I like ac , dc and continuity functions The battery lasts long It shuts off after no use and has a light in dark settings Good value
J**Z
Accurate, Easy to Use & Great Value
I bought the AstroAI Digital Multimeter Tester for various projects around the house and have been really impressed. The display is clear and easy to read, and switching between modes voltage, current, resistance, continuity, is intuitive even for a beginner like me. I've used it to check outlets, test batteries, and troubleshoot electrical issues, and the readings have been consistent and reliable. The build feels solid, and the blue color is a nice touch, it stands out but still looks professional. Overall, this multimeter gives me everything I need without overcomplicating things. Great quality for the price and a must have tool for DIYers or anyone who works on basic electrical stuff. Highly recommend!
C**R
Works for testing grounding mats, but cord length and instructions need improvement
I purchased this to test whether my grounding mat was actually working, and in terms of functionality, it does what it’s supposed to do. I was able to confirm that my mat is grounded. However, I ran into a few usability issues that are worth mentioning for anyone considering this, especially if you’re not familiar with electrical tools. The wires are not long enough to easily connect to the grounding port without lifting the device up. In my case, the outlet is positioned much higher than normal, which made it impossible to keep the tester flat on the bed while connected. Because of that, I couldn’t touch the mat properly while it was hanging between the outlet and the bed, which affected the measurement setup. To get a usable reading, I had to touch the mat with my foot instead, which worked, but wasn’t ideal. Another challenge was the instructions. They were not very beginner-friendly. I’m not an electrical tech person, so I had to watch YouTube videos and read online guides to fully understand how to use the tester correctly. Pros: Confirms whether a grounding mat is working Once set up correctly, it provides accurate results Useful tool for grounding verification Cons: Wires are too short for some outlet setups Difficult to use if outlets are positioned high Instructions are not clear for beginners Who this is best for: People who already have basic electrical knowledge or a standard, low outlet setup. Beginners may need additional guidance. Overall: The product works and serves its purpose, but longer cords and clearer instructions would greatly improve the experience especially for first-time users.
G**.
Great multimeter.
This multimeter works awesome for diy worker's great home multimeter and for the price it works great.
C**W
Great Little Tool and Perfect of the 3D Enthusiast!
This little item works very well! It is always accurate, easy to read, and fits just about anywhere.
S**R
Compact and versatile
good value for the price,has all the functions I need in a compact unit.
V**H
Good, inexpensive back-up meter.
Great for an inexpensive, reliable back-up meter. I keep my large, full-featured DMM in my basement workshop, but often have a need to use it upstairs for simple tasks like measuring battery voltage, checking for continuity, etc. Buying this small meter for the upstairs eliminates trips to the basement, and it does everything I need it to do for simple tasks.
J**S
Don’t stand up very well needs a better hook besides that works good
Works good for the money. It’s good for small projects.
K**.
- FAIT LE JOB👍👍👍 - LES PILES SONT DEJA PLACEE - MESURES CORRECTES - JE PREFERE LES TOUT AUTOMATIQUE 2025
G**A
J'ai saisie une occasion de solde pour l'acheter. Un appareil pour des mesures électriques 'tension, courant et résistance sans oublier la mesure des tensions des piles de 1,5v et 9v plus la batterie automobile de 12v). Ce multimètre est populaire, il le mérite pour ses caractéristiques et sa compacité.
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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