--- 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: "AED 390" currency: AED in_stock: true reviews_count: 5 category: "Fnirsi" url: https://www.desertcart.ae/products/496608936-fnirsi-usb-tester-4-28v-7a-lcd-usb-a-c store_origin: AE region: United Arab Emirates --- # Fast charge protocol trigger 16-bit ADC precision Capacity & power stats 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:** AED 390 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your precision game with FNIRSI USB Tester — the ultimate fast-charge whisperer! ## 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?** AED 390 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/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 - • **Comprehensive Data Logging:** Track voltage/current curves and capacity stats for up to 9 hours—perfect for deep diagnostics. - • **Ultra-Wide 2.0" TFT Display:** Crystal-clear, full-color viewing from any angle for instant data insights. - • **High-Resolution Measurements:** Voltage, current, power with up to 0.00001 precision—engineered for exacting pros. - • **Multi-Protocol Fast Charge Detection:** Seamlessly triggers QC2.0/3.0, PD2.0/3.0, VOOC, and more—never miss a fast charge moment. - • **Advanced Cable & Temperature Analysis:** Reads E-Marker & DASH cables, measures internal resistance and onboard temperature—next-level USB testing. ## Overview The FNIRSI FNB58 USB Tester is a professional-grade USB voltage and current meter featuring a 2.0-inch full-color TFT display, integrated USB-A, Micro-USB, and Type-C ports. It supports advanced fast charge protocol detection including QC2.0/3.0, PD2.0/3.0, VOOC, and more, with ultra-high resolution measurements and comprehensive data logging capabilities. Designed for tech-savvy professionals, it also offers cable chip reading, internal resistance measurement, and temperature monitoring, making it an indispensable tool for precise USB power diagnostics. ## 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 | 191,558 in DIY & Tools ( See Top 100 in DIY & Tools ) 414 in Multi Testers | | Brand | FNIRSI | | Colour | black | | Compatible Devices | USB devices, mobile phone chargers, U disks, USB interfaces, mobile power supplies | | Customer Reviews | 4.4 out of 5 stars 691 Reviews | | Included Components | USB Tester | | Item Weight | 0.1 Pounds | | Item weight | 0.1 Pounds | | 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) ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ae/products/496608936-fnirsi-usb-tester-4-28v-7a-lcd-usb-a-c](https://www.desertcart.ae/products/496608936-fnirsi-usb-tester-4-28v-7a-lcd-usb-a-c) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-08-21*