---
product_id: 496608936
title: "FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0"
brand: "fnirsi"
price: "S/.448"
currency: PEN
in_stock: true
reviews_count: 5
category: "Fnirsi"
url: https://www.desertcart.pe/products/496608936-fnirsi-usb-tester-4-28v-7a-lcd-usb-a-c
store_origin: PE
region: Peru
---

# 7A max current 16-bit ADC precision 4-28V voltage range FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0

**Brand:** fnirsi
**Price:** S/.448
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your tech IQ with FNIRSI’s ultimate USB tester!

## Quick Answers

- **What is this?** FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 by fnirsi
- **How much does it cost?** S/.448 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/496608936-fnirsi-usb-tester-4-28v-7a-lcd-usb-a-c)

## Best For

- fnirsi enthusiasts

## Why This Product

- Trusted fnirsi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-in-One USB Interface:** Seamlessly test USB-A, Micro-USB, and Type-C devices with a single compact tool featuring a 2.0-inch full-color TFT display.
- • **Comprehensive Data Tracking:** Monitor and record voltage, current, power, and ripple waveforms for up to 9 hours with high-speed sampling rates—perfect for in-depth diagnostics.
- • **Ultra-Precise Power Metrics:** Experience pinpoint accuracy with a 16-bit ADC and 0.00001 resolution for voltage, current, and power readings.
- • **Fast Charge Protocol Mastery:** Automatically detect and trigger all major fast charging standards including PD3.0, QC3.0, VOOC, and Super VOOC for next-level device compatibility.
- • **Advanced Cable & Temperature Insights:** Measure internal wire resistance, read E-Marker and DASH cable data, plus onboard temperature monitoring to ensure optimal charging safety.

## Overview

The FNIRSI FNB58 USB Tester is a professional-grade multimeter designed for precise USB voltage, current, and power measurement across USB-A, Micro-USB, and Type-C interfaces. Featuring a vibrant 2.0-inch TFT display and a 16-bit ADC, it supports fast charge protocol detection including PD3.0 and QC3.0, with advanced data logging and cable diagnostics. Ideal for tech-savvy professionals demanding accuracy and comprehensive USB device testing.

## Description

FNB58 USB tester is a high-reliability, high-safety USB voltage andcurrent detection meter and a mobile communication terminal fast chargingtrigger.It has a 2.0-inch full-color ultra-wide viewing angle TFT LCD display, integrated USB-A, Micro-USB, Type-C interface.Use external 16-bit ADC, PD protocol physical chip.It can be used to measure the power supply or power consumption of products such as USB interfaces, mobile phone chargers, and U disks.It can be used to measure the charging power of mobile phones and the input and output of mobile power supplies. It can be used to test the fast charging protocol of chargers.This instruction manual includes relevant safety information, warningtips and solutions to common abnormal situations. Please read the relevantcontent carefully and strictly abide by all warnings and precautions.Do not connect the monitoring interface to a power supply exceeding 28V.Do not connect the PC connection port to a power source exceeding 16v.Only one pair of monitoring interfaces (one input port,one outputport) can work at the same time. When there is a pair of monitoring interfaces working, it is forbidden to connect to the equipment onother monitoring interfaces. (Except the PC connection port, the PC port can be connected to an external power supply).When using the fast charge trigger module,please do not connect equipment that cannot withstand high voltage to any monitoring interface.After using the PD trigger/monitor/conversion/read E-Marker cablefunction, please turn the PD communication switch in the lower rightcorner back to the OFF position.Do not charge the phone after the fast charge is triggered.

Review: não tem bluetooth - Produto de excelente qualidade, ótimo acabamento e muito preciso
Review: Excelente , cumple con lo publicado, - Excelente , cumple con lo publicado,

## Features

- 【Updated Designed USB Tester】FNIRSI FNB58 USB tester has a 2.0-inch full-color ultra-wide viewing angle TFT LCD display, integrated USB-A, Micro-USB, Type-C interface. It is a high-reliability, high-safety USB voltage andcurrent detection meter and a mobile communication terminal fast chargingtrigger. Gravity sensor, automatically switch the display direction.
- 【Multifunction USB Digital Tester】FNB58 uses external 16-bit ADC, PD protocol physical chip. It can be used to measure the power supply or power consumption of products such as USB interfaces, mobile phone chargers, and U disks. FNB58 USB tester can monitor the voltage, current, power, resistance, capacity, temperature, D+/D- voltage etc, it can be used to test the fast charging protocol of chargers.
- 【Fast Charge Protocol Trigger Detection】FNB58 supports trigger detection of various fast charging protocols, QC2.0/QC3.0 trigger, FCP/SCP trigger, AFC trigger, PD2.0/3.0 trigger, VOOC/WARP trigger, Super VOOC 1.0/2.0 trigger. The above protocols all support automatic monitoring. MTK-PE automatic detection. Support QC2.O->PD2.0 protocol conversion.
- 【Parameter Detection and Recording】The highest six-digit display of voltage, current and power, the highest resolution is 0.00001 (V/A/W). 10 sets of switchable capacity, power and time statistics. 1 set of voltage and current curve records, maximum support 9 hours. Support low-speed waveform (voltage, current, D+/D-) drawing, 2sps->100sps sampling rate. Support high-speed ripple (voltage, AC coupling)drawing, up to 4M sps sampling rate.
- 【Other detection functions】FNB58 also has many functions that other USB testers do not have. The internal resistance measurement of the wire by the differential pressure method. E-Marker Cable chip reading. DASH Cable data reading. Record of startup time. Onboard temperature measurement. PD monitor. Analog DASH cable. ☆☆In order to respond to the environmental protection policy and reduce the waste and use of paper, FNB58 does not come with paper manuals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BJ253W31 |
| Best Sellers Rank | 397,650 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,014 in Multi Testers |
| Brand | FNIRSI |
| Colour | black |
| Compatible Devices | USB interfaces, mobile phone chargers, U disks, mobile phones, mobile power supplies, USB-A, Micro-USB, Type-C devices from various brands |
| Customer Reviews | 4.4 out of 5 stars 676 Reviews |
| Included Components | USB Tester |
| Item Weight | 45 g |
| Item weight | 45 g |
| Manufacturer | FNIRSI |
| Manufacturer Part Number | FNIRSI-001 |
| Maximum Operating Voltage | 28 Volts |
| Measurement Type | Voltmeter, Ammeter, Ohmmeter |
| Min. Operating voltage | 4 Volts |
| Minimum Operating Voltage | 4 Volts |
| Model Number | FNIRSI-001 |
| Power Source | Corded Electric |
| Power source | Corded Electric |
| Specification Met | IEC 1010, UL |
| Style | Modern |
| Style Name | Modern |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 40 Degrees Celsius |

## Product Details

- **Brand:** FNIRSI
- **Colour:** black
- **Item weight:** 45 g
- **Power source:** Corded Electric
- **Style:** Modern

## Images

![FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 - Image 1](https://m.media-amazon.com/images/I/71VDjC5CdjL.jpg)
![FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 - Image 2](https://m.media-amazon.com/images/I/71l+PaEZJIL.jpg)
![FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 - Image 3](https://m.media-amazon.com/images/I/81iASFnmbVL.jpg)
![FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 - Image 4](https://m.media-amazon.com/images/I/81IutHHhGqL.jpg)
![FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter with Bluetooth, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 - Image 5](https://m.media-amazon.com/images/I/81boqTui7vL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ não tem bluetooth
*by W***N on 17 February 2024*

Produto de excelente qualidade, ótimo acabamento e muito preciso

### ⭐⭐⭐⭐⭐ Excelente , cumple con lo publicado,
*by E***E on 3 December 2025*

Excelente , cumple con lo publicado,

### ⭐⭐⭐⭐⭐ Top in the market
*by B***P on 29 June 2025*

Excellent product

## Frequently Bought Together

- FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter with App Software, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0
- Treedix USB Cable Tester Board USB Cable Checker Data Wire with Acrylic Case Charging Test Data Line Type-C Micro Type A Type B
- Treedix USB Cable Tester with 2.4" Color Screen for eMarker Reading, PD 3.0/3.1 Detection, Resistor and Continuity Check, Compatible with Lightning, Type-C, Micro-B 2.0/3.0, and Mini-B Cables

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**Shop now:** [https://www.desertcart.pe/products/496608936-fnirsi-usb-tester-4-28v-7a-lcd-usb-a-c](https://www.desertcart.pe/products/496608936-fnirsi-usb-tester-4-28v-7a-lcd-usb-a-c)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-07-07*