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⚡ Power Up Your Tech IQ with Pro-Level USB Testing!
The FNIRSI FNB58 USB Tester is a compact, multi-interface digital multimeter featuring a 2.0-inch TFT LCD for real-time voltage, current, and power monitoring. It supports a wide range of fast charging protocols including QC2.0/3.0 and PD2.0/3.0, equipped with a high-precision 16-bit ADC and advanced sampling rates up to 4 million samples per second. Designed for tech professionals and enthusiasts, it offers detailed cable diagnostics, waveform analysis, and smart data recording in a lightweight, portable form factor.



| ASIN | B0BS2ZS813 |
| Best Sellers Rank | #30,748 in Home Improvement ( See Top 100 in Home Improvement ) #44 in Multi Testers |
| Brand Name | FNIRSI |
| Colour | multi-color |
| Compatible Devices | USB devices, mobile phone chargers, U disks, mobile phones, mobile power supplies |
| Customer Reviews | 4.3 4.3 out of 5 stars (190) |
| Included Components | USB Tester |
| Item Dimensions | 8.2 x 4.2 x 1.2 Centimeters |
| Item Weight | 0.1 Pounds |
| Manufacturer | FNIRSI |
| Maximum Operating Voltage | 28 Volts |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 4 Volts |
| Model Number | FNIRSI-FNB58-bp |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | FNIRSI-FNB58-bp |
| Power Source Type | Corded Electric |
| Specification Met | CE, FCC, RoHS, UL |
| Style Name | Digital |
| Upper Temperature Rating | 125 Degrees Celsius |
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