Quick answer
Choose the FNIRSI DSO-152 Plus if you need a dedicated, ultra-portable oscilloscope for low-frequency signal tracing. Pick the DSO-TC3 if you also want a component tester and signal generator in one tool.
Bandwidth and sampling: pure scope vs multi-tool
The DSO-152 Plus offers 200KHz bandwidth with 2.5MS/s sampling—enough for audio, sensor, and basic digital logic signals. The DSO-TC3 typically provides similar bandwidth but combines the oscilloscope with a transistor tester and PWM generator. If you only need a scope, the DSO-152 Plus is simpler and more focused.
Neither model is designed for high-speed digital work (e.g., SPI or I2C bus decoding above a few MHz). For those tasks, you would need a higher-bandwidth benchtop or professional handheld scope.
Portability and power
The DSO-152 Plus weighs just 100g, charges via USB-C, and includes a 1000mAh battery—ideal for field repairs or quick bench checks. The DSO-TC3 is slightly bulkier due to its additional test modes. Both are pocket-friendly, but the DSO-152 Plus is the lighter, more dedicated option.
What you get in the box
The DSO-152 Plus ships with a P6100 10x probe that extends voltage measurement up to 800Vpp. The DSO-TC3 typically includes a set of test leads and a BNC-to-alligator clip adapter. If you already own probes, the DSO-TC3’s included accessories may be redundant; if you need a proper 10x probe, the DSO-152 Plus has you covered.
Trade-offs at a glance
- Dedicated scope simplicity: The DSO-152 Plus is a pure oscilloscope with one-key AUTO trigger. No extra menus for component testing or signal generation.
- Multi-function versatility: The DSO-TC3 adds a transistor tester and PWM generator, saving bench space if you need those features regularly.
- Included probe quality: The DSO-152 Plus includes a proper 10x probe (P6100) rated for 800Vpp. The DSO-TC3’s included leads are better suited for component testing than high-voltage scope work. If you need to measure mains or high-voltage signals, the DSO-152 Plus is the safer choice.
Product facts
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FNIRSI DSO-152 Plus Pocket Oscilloscope — 200KHz Handheld DSO: 200KHz bandwidth, 2.5MS/s sampling, one-key AUTO trigger, includes P6100 10x probe. You can measure signals up to 800Vpp and quickly lock onto waveforms without manual adjustment—perfect for quick diagnostics.
FNIRSI DSO-152 Plus Pocket Oscilloscope — 200KHz Handheld DSO
Which one fits you?
Best for
- Hobbyists who want a lightweight, dedicated oscilloscope for audio and sensor signals
- Field service technicians who need a quick waveform check without extra features
Not ideal for
- Users who also need a transistor tester or signal generator in one device
- High-speed digital debugging (both models lack sufficient bandwidth)