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🔧 Empower your DIY and professional projects with precision and safety in one sleek blue package!
The AstroAI Digital Multimeter AM33D delivers reliable 2000-count measurements of voltage, current, resistance, continuity, and diode testing. Featuring a backlit LCD, double fuse anti-burn protection, and a durable silicone cover, it ensures safety and ease of use for both household and automotive electrical troubleshooting. Complete with test leads, a 9V battery, and expert support, this compact, lightweight tool is a top-rated essential for millennial professionals and DIY enthusiasts seeking accuracy and confidence in every measurement.













| Asin | B01ISAMUA6 |
| Best Sellers Rank | #178 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 (54,745) 4.5 out of 5 stars |
| 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 |
| Minimum Operating Voltage | 2 Volts |
| Model | AM33D |
| Part Number | MT33D |
| Power Source | Battery Powered |
| Specification Met | Iec 61010 |
| Style Name | compact |
| Unit Count | 1.00 Count |
| Upc | 756910381981 |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
| Warranty Description | 1 Year Warranty by AstroAI |
User
Good entry level multimeter.
I needed to check my battery to see if alternator was working. No issues. Served its purpose. Worth the little money if all you need is basic. Good tool to have in the tool box.
User
Exactly as intended. Works great. Compact for easy travel
Lost the one that I had for years needed one in a pinch while on vacation in Florida. This one was the cheapest with decent ratings. I do agree it's great for the value came charged with batteries worked right out of the bag. You can do DC or AC which is nice. It has lots of different functions. Please make sure you read the owner's manual before sticking those electrics probes in things if you don't know what you're doing. It doesn't come with a carry case so I can't rate it on that, but it does seem accurate based on voltages. I tested it on and it is easy to read with large LCDs display. Definitely a good size for portability. Keeping it in your glove box or your car for quick issues is handy.
User
Simple Tool that Makes Electrical Work Easier
This digital multimeter tester works well for checking basic electrical readings like voltage, continuity, and resistance. It’s easy to read and straightforward to use, even for simple home or automotive troubleshooting. The compact size makes it convenient to keep in a toolbox or glove compartment.It may not be the most advanced professional-grade meter, but it performs reliably for everyday testing and general diagnostics.
User
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.
User
Great value
Great value and quality. Works well
User
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!
User
Good purchase
Worked great. Good price. Well made.
User
Good product & good customer service.
First one I got quit didn’t work. I returned it & it was replaced very quickly. The new one works great & no problems. The picture on Amazon shows 2 AAA batteries. It actually came with a 9 volt which i think is a better choice.
User
SATISFAIT 👍👍👍
- FAIT LE JOB👍👍👍- LES PILES SONT DEJA PLACEE- MESURES CORRECTES- JE PREFERE LES TOUT AUTOMATIQUE 2025
User
Great multimeter
Awesome little multimeter, does what I need it to do straight out of the box. Easy to use 5 ⭐️⭐️⭐️⭐️⭐️
User
Un très bon multimètre
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.
User
Atendeu perfeitamente a minha necessidade
Muito bom!
User
Great tool for home
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.
Trustpilot
2 months ago
2 months ago