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If you’re shopping for an oscilloscope to use in your garage or workshop, you’re probably looking at the FNIRSI 2D15P and the FNIRSI 1013D Plus. Both are 2-channel, 100MHz portable scopes, but the 2D15P packs in a multimeter and signal generator, while the 1013D Plus offers a larger screen and a faster 1GSa/s sampling rate.
This comparison is for the DIY mechanic or technician who needs to decide between an all-in-one tool and a dedicated scope with a bigger display. I’ll show you exactly where each one shines so you can pick the right tool for your bench.
🏆 Quick Picks — My Top Recommendations
Best Overall: FNIRSI 2D15P
The 3-in-1 design combines a scope, a 19,999-count TRMS multimeter, and a 10MHz DDS signal generator for total diagnostic versatility — Check Price →
Runner-Up: FNIRSI 1013D Plus
The 7-inch touchscreen and 1GSa/s sampling rate give you a bigger, clearer picture for detailed waveform analysis — Check Price →
I’ve lined up all the key specs side by side so you can see exactly how the FNIRSI 2D15P and the FNIRSI 1013D Plus stack up against each other.
Full Specs Comparison
| Specification | FNIRSI 2D15P 100MHz Digit | FNIRSI 1013D Plus Oscillo |
|---|---|---|
| Bandwidth | ✅ 100 MHz | 100 MHz |
| Sampling Rate | ✅ 500 MS/s | 1 GSa/s |
| Channels | ✅ 2 | 2 |
| Display Size | 4.3″ | ✅ 7″ |
| Display Type | Touch Screen | TFT LCD Touch Screen |
| Multimeter Counts | ✅ 19,999 TRMS | — |
| Signal Generator | ✅ 10 MHz DDS | — |
| Dimensions | ✅ 5.08 x 2.24 x 7.72 in | — |
| Power Source | ✅ Battery Powered | — |
| Weight | — | — |
| High Voltage Probe | — | ✅ 100X |
| Trigger Function | — | ✅ Single/Normal/Automatic |
The biggest difference I see is the 2D15P’s built-in multimeter and DDS signal generator versus the 1013D Plus’s faster 1GSa/s sampling rate and larger 7-inch screen.
Individual Product Breakdown
I spent time digging through the specs and user feedback on both of these FNIRSI oscilloscopes to give you an honest take on what each one does best for automotive work.
FNIRSI 2D15P 100MHz Digital Oscilloscope Multimeter DDS Signal Generator 3 in 1
100MHz Bandwidth | 500MS/s Sampling | 4.3″ Touch Screen | 19,999-Count TRMS Multimeter
- 【2-Channel Oscilloscope Multimeter】FNIRSI 2D15P digital oscilloscope...
- 【Full Diagnostics】Digital multimeter auto-measures AC/DC voltage...
- 【Waveform Analysis】Lab oscilloscope offers 13 parameters and 6 math...
This is the Swiss Army knife of automotive diagnostics. I love that it combines a 100MHz oscilloscope, a 19,999-count TRMS multimeter, and a 10MHz DDS signal generator all in one box. The 4.3-inch touchscreen is responsive, and the built-in 5000mAh battery lets me work in the field for hours. My only gripe is the smaller screen compared to the 1013D Plus, which can make detailed waveforms feel a bit cramped.
✅ Pros
- 3-in-1 design saves space in my toolbox
- 10MHz DDS signal generator with 9 waveform types
- 5000mAh battery for long field sessions
- 19,999-count TRMS multimeter with curve view
❌ Cons
- 4.3-inch screen is small for complex waveform analysis
- Only 500MS/s sampling rate, slower than the 1013D Plus
FNIRSI 1013D Plus Oscilloscope – Portable Handheld Tablet Oscilloscope with 100X High Voltage Probe
100MHz Bandwidth | 1GSa/s Sampling | 7″ TFT LCD Touch Screen | 6000mAh Battery
- Touchscreen Oscilloscope: FNIRSI oscilloscope with 1 GSA/S sampling rate...
- Portable Design: 7 inch, 800 * 480 resolution, bright colors, high...
- Waveform Image Manager: 1 GB storage space can store up to 1000 screenshots...
If you need to see every detail of a waveform, the 1013D Plus is the better choice with its massive 7-inch touchscreen and faster 1GSa/s sampling rate. I really appreciate the included 100X high-voltage probe, which is perfect for safely testing ignition coils and injectors. The 6000mAh battery gives me about 4 hours of use, but you lose the built-in multimeter and signal generator that the 2D15P offers.
✅ Pros
- 7-inch 800×480 touchscreen is excellent for waveform detail
- 1GSa/s sampling rate captures fast signal edges
- Comes with a 100X high-voltage probe for automotive use
- 1GB storage for up to 1000 screenshots and waveform data
❌ Cons
- No built-in multimeter or signal generator
- Bulky form factor compared to the 2D15P
Which One Should You Buy?
I’ve spent a lot of time with the specs of both of these, and the right pick really comes down to whether you want an all-in-one tool or a dedicated scope with a bigger screen. Here’s how I break it down for different buyers.
FNIRSI 2D15P 100MHz Digital Oscilloscope Multimeter DDS Signal Generator 3 in 1 is right for you if…
- You want one tool that can measure voltage, resistance, and capacitance with the 19,999-count TRMS multimeter while also viewing waveforms
- You need a 10MHz DDS signal generator to simulate sensor signals for testing circuits without a running engine
- You work in tight engine bays and need a compact 4.3-inch touchscreen unit that’s easy to hold in one hand
FNIRSI 1013D Plus Oscilloscope – Portable Handheld Tablet Oscilloscope with 100X High Voltage Probe is right for you if…
- You need to see fine signal details, and the 7-inch 800×480 screen makes a real difference when analyzing complex waveforms
- You work with high-voltage automotive circuits and want the included 100X probe for safe testing of ignition coils
- You prioritize capturing fast signal edges with the 1GSa/s sampling rate, like when diagnosing CAN bus or crank sensor issues
❌ Who Should Skip All of These?
If you’re a professional technician who needs benchtop-grade accuracy and deep memory analysis, you’ll want to look at a full-sized bench oscilloscope from brands like Siglent or Rigol. These handheld units are great for field diagnostics, but they won’t replace a proper lab scope for serious R&D or calibration work.
For the most common buyer — a DIY mechanic or mobile technician — I’d grab the FNIRSI 2D15P first because the built-in multimeter and signal generator give you way more diagnostic power in one package. The 1013D Plus is only a better bet if you absolutely need that larger screen and faster sampling rate for detailed waveform work.
Frequently Asked Questions
Which oscilloscope is better for automotive diagnostics, the FNIRSI 2D15P or the 1013D Plus?
I’d give the edge to the FNIRSI 2D15P for most automotive work because it’s a 3-in-1 tool with a 19,999-count TRMS multimeter and a 10MHz DDS signal generator built right in. That means you can measure voltage, resistance, and capacitance, then simulate sensor signals without grabbing a second device. The 1013D Plus is better if you need the larger 7-inch screen and faster 1GSa/s sampling rate for detailed waveform analysis, but you lose the multimeter and generator.
Is the 1GSa/s sampling rate on the 1013D Plus worth it over the 500MS/s on the 2D15P?
For basic automotive work like checking injector pulses or alternator ripple, the 500MS/s on the 2D15P is perfectly fine. But if you’re diagnosing fast signals like CAN bus data lines or high-frequency ignition patterns, the 1013D Plus’s 1GSa/s sampling rate captures those signal edges much more accurately. I’d say the faster rate only matters if you regularly work with high-speed digital signals.
Does the FNIRSI 2D15P replace a separate multimeter?
Yes, it absolutely can. The 2D15P includes a 19,999-count TRMS multimeter that measures AC/DC voltage and current, resistance, capacitance, diodes, and continuity. I’d still keep a dedicated multimeter in your toolbox as a backup, but for most field diagnostics, this one tool handles everything you need.
Which one has a better screen for reading waveforms?
The FNIRSI 1013D Plus wins hands down here with its 7-inch TFT LCD touchscreen at 800×480 resolution. The 2D15P has a smaller 4.3-inch IPS touchscreen, which is still sharp and responsive, but you’ll find yourself zooming and scrolling more to see fine detail. If you’re doing a lot of waveform analysis, the bigger screen on the 1013D Plus is a real advantage.
Can I use either oscilloscope to test high-voltage ignition systems?
The FNIRSI 1013D Plus comes with a 100X high-voltage probe in the box, so you can safely test ignition coils and secondary ignition patterns right out of the package. The 2D15P does not include a high-voltage probe, so you’d need to buy one separately. That makes the 1013D Plus a better pick for ignition diagnostics right from the start.
Which one has better battery life for mobile diagnostics?
The FNIRSI 2D15P packs a 5000mAh lithium battery, while the 1013D Plus has a 6000mAh battery rated for about 4 hours of use. In my experience, both will get you through a solid day of diagnostics, but the 1013D Plus’s larger battery gives you a bit more headroom. The 2D15P also uses Type-C charging, which is convenient for charging in the car or from a power bank.
My Final Verdict
I’m giving the win to the FNIRSI 2D15P for most automotive buyers because the built-in 19,999-count TRMS multimeter and 10MHz DDS signal generator make it a true all-in-one diagnostic tool. The 1013D Plus is a fine runner-up if you absolutely need the larger 7-inch screen and faster 1GSa/s sampling rate, but you lose the versatility of the multimeter and generator.
If you’re on the fence, ask yourself this: do you want one tool that handles voltage checks, waveform viewing, and signal simulation, or are you willing to carry separate gear for a bigger display? The 2D15P simplifies your toolbox in a way the 1013D Plus just can’t match.
Winner: FNIRSI 2D15P
- 【2-Channel Oscilloscope Multimeter】FNIRSI 2D15P digital oscilloscope...
- 【Full Diagnostics】Digital multimeter auto-measures AC/DC voltage...
- 【Waveform Analysis】Lab oscilloscope offers 13 parameters and 6 math...
The best pick for the mechanic who wants a scope, multimeter, and signal generator in one handheld package with a 5000mAh battery for all-day use.
Runner-Up: FNIRSI 1013D Plus
- Touchscreen Oscilloscope: FNIRSI oscilloscope with 1 GSA/S sampling rate...
- Portable Design: 7 inch, 800 * 480 resolution, bright colors, high...
- Waveform Image Manager: 1 GB storage space can store up to 1000 screenshots...
Choose this if you need the 7-inch screen for detailed waveform analysis and the included 100X high-voltage probe for ignition system testing.
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