







⚡ Power up your tech IQ with FNIRSI’s ultimate USB tester — don’t get left behind!
The FNIRSI USB Tester FNB58 is a cutting-edge, multi-interface USB voltage and current meter featuring a 2.0-inch full-color TFT display, 16-bit ADC precision, and comprehensive fast charge protocol detection including PD and QC standards. Designed for professionals and tech enthusiasts, it offers real-time monitoring, advanced data logging, and compatibility with USB-A, Micro-USB, and Type-C devices, making it an indispensable tool for accurate power diagnostics and fast charging validation.











| Manufacturer | FNIRSI | 
| Part number | FNIRSI-001 | 
| Item Weight | 45.4 g | 
| Package Dimensions | 11.5 x 8.5 x 2.4 cm; 45.36 g | 
| Item model number | FNIRSI-001 | 
| Colour | multi-color | 
| Style | Modern | 
| Power source type | Corded Electric | 
| Item Package Quantity | 1 | 
| Measurement Accuracy | ±0.5‰ | 
| Included components | USB Tester | 
| Batteries included? | No | 
| Batteries Required? | No | 
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