FNIRSI P02 USB Oscilloscope Probe Set vs Hakko FX-901/P Cordless Battery Soldering Iron
Head-to-head spec comparison to help you pick the right bench tool for your needs.
FNIRSI
$49
Hakko
$33.12
Comparing brands?
Read the full Hakko vs Weller vs JBC: The Definitive Soldering Station Brand Comparison →
Brand philosophies, tip ecosystems, 5-year TCO math, and what we'd actually buy with our own money.
Read the brand-comparison guide →Spec-by-Spec Comparison
| Spec | FNIRSI P02 USB Oscilloscope Probe Set | Hakko FX-901/P Cordless Battery Soldering Iron |
|---|---|---|
| Station Type | USB Oscilloscope Probe | Cordless Soldering Iron |
| Wattage | 0 W | 6 W |
| Temp Range | N/A °C | N/A °C |
| Temp Stability | 0 ±°C | 0 ±°C |
| Tip System | Probe Clips | Fixed Battery Tip |
| Digital Display | No | No |
| Temp Lock | No | No |
| Sleep Mode | No | No |
| Hot-Air Channel | No | No |
| Channels | 2 | 1 |
| Price | $49 | $33.12 |
| Rating | 4.1/10 | 3.9/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
FNIRSI P02 USB Oscilloscope Probe Set
Pros
- No PC software needed — runs via USB-C as a USB scope directly
- 50MHz bandwidth sufficient for most digital signal debugging (I2C, SPI, UART)
- Compact enough to keep on the bench without dedicated scope space
- Includes 2 probes for comparing clock vs data simultaneously
- Works on Windows, Mac, and Linux without drivers
- Adds real capability at an impulse-buy price
Cons
- Not a replacement for a real oscilloscope — sample depth and trigger options limited
- USB bandwidth means slower waveform update rate than dedicated hardware
- No external trigger input
- Software UI is functional but not polished
Hakko FX-901/P Cordless Battery Soldering Iron
Pros
- Genuinely cordless — battery-powered, no bench outlet or station box required
- Useful as a field or automotive second iron when a mains station isn't practical
- Hakko's reliability reputation carries over from the FX-888D line
- Inexpensive enough to keep as a dedicated travel iron alongside a bench station
Cons
- 6W output only handles light-gauge wire and small joints — not a PCB rework tool
- No digital display, temperature lock, or adjustable set-point — a simple on/off battery iron
- Heat-up time and battery life are both noticeably worse than a mains station
- This is a second iron, not a primary bench tool — pair it with a real station like the FX-888D
Our Verdicts
FNIRSI P02 USB Oscilloscope Probe Set
The FNIRSI P02 is the best 'good enough' USB scope for a soldering bench. If you debug Arduino/ESP firmware, verify PWM signals, or check I2C traffic, it saves hours of print-statement debugging. Not a standalone scope replacement — a perfect $50 complement.
Hakko FX-901/P Cordless Battery Soldering Iron
Not a bench station and shouldn't be judged as one — the FX-901/P is a cheap, genuinely useful cordless second iron for field repairs and automotive work where an outlet isn't an option. Buy it to complement a real station, not to replace one.
Frequently Asked Questions
Which is better, the FNIRSI P02 USB Oscilloscope Probe Set or the Hakko FX-901/P Cordless Battery Soldering Iron?
It depends on your use case. FNIRSI P02 USB Oscilloscope Probe Set (FNIRSI, $49): The FNIRSI P02 is the best 'good enough' USB scope for a soldering bench. If you debug Arduino/ESP firmware, verify PWM signals, or check I2C traffic, it saves hours of print-statement debugging. Not a standalone scope replacement — a perfect $50 complement. Hakko FX-901/P Cordless Battery Soldering Iron (Hakko, $33.12): Not a bench station and shouldn't be judged as one — the FX-901/P is a cheap, genuinely useful cordless second iron for field repairs and automotive work where an outlet isn't an option. Buy it to complement a real station, not to replace one.
How much does the FNIRSI P02 USB Oscilloscope Probe Set cost vs the Hakko FX-901/P Cordless Battery Soldering Iron?
As of 2026, the FNIRSI P02 USB Oscilloscope Probe Set is $49 and the Hakko FX-901/P Cordless Battery Soldering Iron is $33.12 on Amazon — a $15.880000000000003 difference. Amazon list prices fluctuate; check the linked product pages for current pricing.
Is the FNIRSI P02 USB Oscilloscope Probe Set good for beginners?
FNIRSI P02 USB Oscilloscope Probe Set is suited for: hobbyist, pcb, beginner. Hakko FX-901/P Cordless Battery Soldering Iron is suited for: beginner, vintage. If you're picking your first bench tool, choose the one whose use-case list includes "beginner" — and prioritize ease of setup over advanced features.
Which has the better support ecosystem, FNIRSI or Hakko?
FNIRSI P02 USB Oscilloscope Probe Set: uses the Probe Clips tip ecosystem, so replacement tips and specialty shapes matter. Hakko FX-901/P Cordless Battery Soldering Iron: uses the Fixed Battery Tip tip ecosystem, so replacement tips and specialty shapes matter.