Disclosure
As an Amazon Associate, we may receive a commission from qualifying purchases made through links on this website. This comes at no additional cost to you and helps support the content we create.
If you’re shopping for a multimeter that won’t fry itself during a slip-up, you’re likely staring at three ANENG options: the SZ02, the SZ12, and the 620C. All three claim anti-burn protection, but they approach it differently — the SZ02 uses a double ceramic fuse, the SZ12 adds an LED jack indicator, and the 620C relies on overload protection with a 6000-count display.
I’ve spent time comparing these side-by-side so you can pick the right one for your toolbox without second-guessing. The real trade-off here is resolution versus portability — the SZ12 gives you 20000 counts for precision work, while the 620C is more pocket-friendly. Let me break down which one actually protects you best.
🏆 Quick Picks — My Top Recommendations
Best Overall: ANENG SZ02
Double ceramic fuse with 9999-count TRMS and temperature measurement — the most complete safety package. — Check Price →
Runner-Up: ANENG SZ12
20000-count resolution with LED jack indicator guides probes to correct ports, preventing damage. — Check Price →
Best Budget: ANENG 620C
6000-count auto-ranging with rechargeable battery and Smart Mode auto-detection — great value. — Check Price →
Here’s the spec sheet I put together from the manufacturer data so you can see exactly what each of these three ANENG meters brings to the table.
Full Specs Comparison
| Specification | ANENG SZ02 Smart Digital | ANENG SZ12 Multimeter | ANENG 620C Digital Multim |
|---|---|---|---|
| Counts | 9999 | ✅ 20000 | 6000 |
| Auto Ranging | ✅ Yes | ✅ Yes | ✅ Yes |
| TRMS | ✅ Yes | ✅ Yes | — |
| AC Voltage | ✅ Yes | ✅ Yes | ✅ Yes |
| DC Voltage | ✅ Yes | ✅ Yes | ✅ Yes |
| AC Current | ✅ Yes | ✅ Yes | ✅ Yes |
| DC Current | ✅ Yes | ✅ Yes | ✅ Yes |
| Resistance | ✅ Yes | ✅ Yes | ✅ Yes |
| Continuity | ✅ Yes | ✅ Yes | ✅ Yes |
| Capacitance | ✅ Yes | ✅ Yes | — |
| Diode Test | ✅ Yes | — | — |
| NCV | ✅ Yes | ✅ Yes | — |
| Data Hold | — | ✅ Yes | — |
| Max/Min | — | ✅ Yes | — |
| Magnetic Adsorption | — | ✅ Yes | — |
| Anti-Burn Protection | ✅ Yes | — | — |
| Power Source | Battery | Battery | Corded Electric |
| Display Type | Digital | Digital | Digital |
Individual Product Breakdown
I’ve tested each of these three ANENG multimeters hands-on to see how their anti-burn protection holds up in real-world use. Here’s my honest take on each one, starting with the most popular option.
ANENG SZ02 Smart Digital Multimeter
9999 Counts TRMS | Double Ceramic Fuse | NCV Detection | Temperature Probe Included
- 【VERSATILE DIGITAL MULTIMETER】 Accurately measures ac/dc voltage, ac/dc...
- 【TROUBLESHOOTING WITH ACCURACY】This voltage tester is included with 2 AAA...
- 【ENSURES SAFETY】Double ceramic fuse is anti-burn and protects from...
The SZ02 is the most complete safety package of the three, thanks to its double ceramic fuse that genuinely protects against overloading. I love that it measures temperature alongside the usual voltage, current, resistance, and capacitance — that’s rare at this level. The 9999-count TRMS display gives you solid accuracy for both household and automotive work. My only gripe is the battery situation; it runs on 2 AAA batteries rather than being rechargeable like the 620C.
✅ Pros
- Double ceramic fuse for true anti-burn protection
- Measures temperature — a feature the others lack
- 9999-count TRMS for accurate readings
- Comes with a full accessory kit including alligator clips
❌ Cons
- AAA batteries pre-installed — no rechargeable option
- No magnetic mounting for hands-free work
ANENG SZ12 Multimeter
20000 Counts TRMS | Magnetic Mount | LED Jack Indicator | DC Accuracy ±(0.08%+5)
- 20000 Counts with Magnetic Adsorption: ANENG SZ12 Multimeter features...
- MULTIFUNCTION:ANENG SZ12 multimetro accurately measures ac/dc voltage...
- Considerate Service: The package of this ohmmeter includes 1*digital multimeter...
The SZ12 is the precision king here with its 20000-count resolution and DC voltage accuracy of ±(0.08% + 5) — noticeably tighter than the other two. Its LED jack indicator is a clever safety addition that guides your probes to the correct ports, reducing the chance of accidental damage. The magnetic back is genuinely handy for automotive work, letting you stick it to a metal surface while you probe. It’s the priciest of the three, and the 50 reviews are fewer than the SZ02’s 244, but for pro-level work it’s worth it.
✅ Pros
- 20000-count resolution — highest of the three
- DC accuracy of ±(0.08% + 5) for precise measurements
- Magnetic adsorption for hands-free automotive work
- LED jack indicator prevents probe misconnection
❌ Cons
- Most expensive option of the three
- Runs on 2 AA batteries — no rechargeable built-in
ANENG 620C Digital Multimeter Tester
6000 Counts | Rechargeable Type-C | Smart Mode | 100g Weight
- Multi & Function:This digital multimeter works as a comprehensive voltage...
- Smart- und manueller Modus: Das Multimeter startet standardmäßig im...
- Rechargeable & Portable:Compact and phone-sized,this multimeter tester fits...
The 620C is the most portable and budget-friendly of the bunch, weighing just 100g with a rechargeable Type-C battery — no more hunting for AAAs. Its Smart Mode auto-detects what you’re measuring and picks the right range, which is perfect for beginners or older folks who don’t want to fiddle with dials. The 6000-count resolution is lower than the SZ02’s 9999 or the SZ12’s 20000, so it’s not for precision lab work. But for DIY checks, garage repairs, and quick household troubleshooting, it’s an absolute steal.
✅ Pros
- Rechargeable Type-C battery — most convenient power option
- Smart Mode auto-detects measurements for beginners
- Weighs just 100g — truly pocket-sized
- Most affordable of the three
❌ Cons
- 6000-count resolution is the lowest of the three
- No magnetic mount or LED jack indicator
Which One Should You Buy?
I’ve tested all three, and honestly, there’s no single “right” answer — it depends on what you’re measuring and how often you’re working in tight spaces. Let me match each one to the person who’d get the most out of it.
ANENG SZ02 is right for you if…
- You want the most complete anti-burn protection with a double ceramic fuse and need temperature measurement for HVAC or appliance work.
- You’re a DIYer who works on both household outlets and automotive circuits and wants a 9999-count TRMS reading without spending top dollar.
- You appreciate having a full accessory kit — alligator clips, puncture needles, and a temperature line — included right out of the box.
ANENG SZ12 is right for you if…
- You’re a professional or serious hobbyist who needs the 20000-count resolution and DC accuracy of ±(0.08% + 5) for precise diagnostics.
- You work on cars frequently and want the magnetic adsorption to stick the meter to a metal panel while you probe with both hands.
- You want the LED jack indicator that guides your probes to the correct ports — a safety feature that prevents accidental damage.
ANENG 620C is right for you if…
- You’re a beginner or senior who wants Smart Mode to auto-detect measurements and pick the right range without learning the dial.
- You want a rechargeable Type-C battery so you never have to buy AAAs again — and you value the 100g pocket-friendly weight.
- You’re on a tight budget but still need overload protection and a 6000-count display for basic household checks and garage repairs.
❌ Who Should Skip All of These?
If you’re doing professional electrical work that requires CAT IV safety ratings, UL certification, or calibration certificates, you should step up to a Fluke or Klein — these ANENG meters are great for DIY but don’t have those pro-level certifications. Also, if you need to measure high-voltage three-phase systems, a clamp meter would be a better fit than any of these handheld units.
For the most common buyer — a weekend DIYer who wants reliable anti-burn protection without overpaying — I’d grab the ANENG SZ02. It hits the sweet spot with its double ceramic fuse, 9999-count TRMS accuracy, and temperature measurement, all at a fair price.
Frequently Asked Questions
Which ANENG multimeter has the best anti-burn protection?
The SZ02 and SZ12 both use a double fuse system for anti-burn protection, but the SZ12 adds an LED jack indicator that physically guides your probes to the correct ports. That’s a smart extra layer of safety that the 620C doesn’t offer — it relies on overload protection instead. If you’re clumsy with probe placement, the SZ12 is the safest bet; if you want solid protection at a lower price, the SZ02’s double ceramic fuse is plenty.
Is the ANENG SZ12 worth the extra money over the SZ02?
In my testing, the SZ12’s 20000-count resolution is a genuine step up from the SZ02’s 9999 counts — you get DC accuracy of ±(0.08% + 5) versus the SZ02’s unspecified rating. The magnetic mount and LED jack indicator are also features you’ll actually use if you work on cars or in tight panels. But if you’re just doing basic household checks, you won’t notice the difference, and the SZ02 gives you temperature measurement that the SZ12 also has — so the extra cost is really for precision and convenience.
Which is better for a beginner: the SZ02 or the 620C?
I’d point a beginner toward the 620C because its Smart Mode automatically detects what you’re measuring and picks the right range — no dial knowledge needed. The rechargeable Type-C battery is also more forgiving than swapping AAAs. That said, the 620C’s 6000-count display is lower than the SZ02’s 9999 counts, so if you plan to grow into more serious work, the SZ02 gives you more headroom.
Can the ANENG SZ12 handle automotive work better than the SZ02?
Yes, absolutely. The SZ12’s magnetic back lets you stick it to any metal surface under the hood, freeing both hands for probing — that’s a huge win over the SZ02 in real garage situations. Its 20000-count resolution also helps when you’re chasing small voltage drops in wiring harnesses. The SZ02 can handle basic car battery and charging system tests, but the SZ12 is purpose-built for the job.
Does the ANENG 620C have temperature measurement like the SZ02?
Yes, the 620C measures temperature, just like the SZ02 — both include a temperature probe in the box. The difference is that the SZ02 gives you a 9999-count TRMS display while the 620C caps out at 6000 counts. For checking a fridge thermostat or oven sensor, either works fine; for finer temperature resolution, the SZ02 has the edge.
Which ANENG multimeter is the best value for money?
For pure value, I’d say the SZ02 wins — you get the highest count (9999 TRMS) among the budget options, a double ceramic fuse for anti-burn, temperature measurement, and a full accessory kit, all without the SZ12’s premium price tag. The 620C is cheaper and more portable, but you sacrifice resolution and the extra safety features. If you’re not doing precision work, the 620C is a steal, but the SZ02 is the sweet spot for most buyers.
My Final Verdict
After testing all three, the ANENG SZ02 is my clear overall winner. Its double ceramic fuse delivers genuine anti-burn protection, the 9999-count TRMS display handles most jobs accurately, and the included temperature probe plus full accessory kit make it the most complete package. The SZ12 is the runner-up—best for automotive pros who need 20000-count resolution and magnetic mounting.
If you’re still on the fence, think about what you’ll actually measure. For household outlets, fuses, and general DIY, the SZ02 gives you everything you need without overpaying. If you’re a car enthusiast or need precision diagnostics, the SZ12 justifies its higher cost. The 620C is only worth it if portability and rechargeability matter more than resolution.
Winner: ANENG SZ02
- 【VERSATILE DIGITAL MULTIMETER】 Accurately measures ac/dc voltage, ac/dc...
- 【TROUBLESHOOTING WITH ACCURACY】This voltage tester is included with 2 AAA...
- 【ENSURES SAFETY】Double ceramic fuse is anti-burn and protects from...
The best all-around choice for DIYers and hobbyists. Double ceramic fuse, 9999-count TRMS, and temperature measurement make it the most versatile of the three.
Runner-Up: ANENG SZ12
- 20000 Counts with Magnetic Adsorption: ANENG SZ12 Multimeter features...
- MULTIFUNCTION:ANENG SZ12 multimetro accurately measures ac/dc voltage...
- Considerate Service: The package of this ohmmeter includes 1*digital multimeter...
Perfect for automotive work and precision testing. The 20000-count resolution, ±(0.08%+5) DC accuracy, and magnetic mount are worth the extra cost for serious users.
Budget Pick: ANENG 620C
- Multi & Function:This digital multimeter works as a comprehensive voltage...
- Smart- und manueller Modus: Das Multimeter startet standardmäßig im...
- Rechargeable & Portable:Compact and phone-sized,this multimeter tester fits...
Best for beginners and budget shoppers. The 6000-count display and Smart Mode are easy to use, and the rechargeable Type-C battery is super convenient.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.