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Highlights
✦ Bidirectional high current detection: FNIRSI FNAC-28 USB tester supports 6.5 A bidirectional current detection, USB-A/Type-C interface compatible, accurately measures power supply and power consumption, and provides users with detailed data support.
✦ High-precision measurement chip: The USB power meter uses an external 16-bit ADC to ensure accurate measurement of voltage and current data, effectively reducing the error range and improving the professionalism of the test.
✦ Multi -functional data analysis: USB cable tester supports battery capacity testing, stores 5 sets of data; supports curve display, waveform pause, and the time base range can be adjusted, observed the data carefully.
✦ Fast charging protocol support: Voltage tester supports QC2.0/QC3.0, FCP/SCP, AFC, VOOC/WARP, SVOOC 1.0/SVOOC2.0 triggering. All the above protocols support automatic detection to meet various testing needs.
✦ Cable detection and simulation: The USB detector uses the differential pressure method to measure the internal resistance of the cable, simulate APPLE 2.4 A, DASH fast charging, read DASH cable information.
The FNAC-28 USB Tester is a multifunctional USB voltage and current meter, as well as a quick charge trigger device for mobile communication terminals.
Features
- It features a full-color, ultra-wide viewing angle TFT LCD display and integrates multiple interfaces, including USB-A and Type-C male and female connectors, ensuring broad compatibility.
- Utilizing an external 16-bit ADC chip, it offers high measurement accuracy.
- This device can measure the power supply or consumption of USB interfaces, phone chargers, USB drives, and other products.
- It can also measure phone charging power, and the input and output conditions of power banks, and perform quick charge protocol testing for chargers.
Specifications
Brand
FNIRSI
Model
FNAC-28
Screen
1.06 inch color screen
Monitored Voltage
4~24V
Monitored Current
0~6.5A
Monitored Power
0~156W
Protocol Detection
① QC2.0: 5V/9V/12V/20V
② QC3.0: 3.4-20V
③ FCP: 9V/12V/20V
④ SCP: 5.5-6.0V
⑤ AFC: 9V/12V
⑥VOOC/WARP: 20V
⑦ SVOOC 1.0: Support
⑧ SVOOC 2.0: Support
② QC3.0: 3.4-20V
③ FCP: 9V/12V/20V
④ SCP: 5.5-6.0V
⑤ AFC: 9V/12V
⑥VOOC/WARP: 20V
⑦ SVOOC 1.0: Support
⑧ SVOOC 2.0: Support
Cable Resistance
Support
Detect DASH Cable
Support
Soft DASH Cable
Support
Soft APPLE 2.4A
Support
Brightness Adjustment
Support
Standby Time Setting
Support
Temperature symbol
℃ and ℉ switch
Language
Chinese and English
Firmware Upgrade
Support
Dimensions
73×36×12mm
Weight
21g
Using Environment and Precautions
The device should be stored in a soft case, and the operating environment should be at a temperature of -5~40℃, and the relative humidity should not exceed 80%.
The device should be stored in a clean and dry place to avoid moisture, mold, heavy pressure, mechanical damage,humidity and direct sunlight.
Avoid using in the rain or fog, avoid dropping or shocking.
When the screen on the LCD does not light up, it indicates that the voltage is too low, and it needs to be charged in time.
Copyrights
The product specifications are subject to change without notice, allfinal interpretation rights were reserved by FNIRSI Technology Co., Ltd, All trademarks, product images，technical parameters are properties of FNIRSI Technology Co.. Ltd. All rights reserved.
Warranty
30-Day return and refund guarantee (Refer to our Refund Policy), 2-year warranty (only available for orders purchased directly from fnirsi.com), lifetime technique support by FNIRSI.
Please feel free to reach us with any concerns:
Email: service@fnirsi.com / info@fnirsi.com
We strive to reply to you within 24 hours.
FNIRSI has started researching and development manufacturer of quality optical products including Golf rangefinder, laser,measure device and binoculars since 2016.
Focus on the development,researching, and manufacturing for over 8 years.
We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.
At Fnirsi, we are committed to providing our customers with the best value for their purchases. To ensure you always get the best price, we offer a 30-day price guarantee on all products purchased directly from fnirsi.com. This policy aims to give you confidence and peace of mind when shopping with us.
What is the 30-Day Price Guarantee?
Our 30-day price guarantee means that if you purchase a product from fnirsi.com and the price of that product drops within 30 days of your purchase date, you are eligible for a refund of the price difference of the products. (Prices are based on USD. No refunds will be given for price changes in other currencies due to exchange rate fluctuations.)
How Does the Price Guarantee Apply?
- Eligibility: The price guarantee applies only to purchases made on fnirsi.com. Products purchased from other retailers or third-party sellers are not eligible.
- Timeframe: The price drop must occur within 30 days of your original purchase date.
- Product Match: The price guarantee applies to the same product (identical model, specifications, and condition).
How to Apply for a Price Difference Refund
If you notice that the price of a product you purchased from fnirsi.com has dropped within 30 days, follow these steps to apply for a refund of the price difference:
- Documentation: Prepare your order number and proof of the price drop (such as a screenshot and link to the product page showing the reduced price).
- Contact Us: Reach out to our customer support team at info@fnirsi.com .Include your order number, proof of the price drop, and a brief explanation of your request.
- Verification: Our team will verify the price drop and your purchase details.
- Refund Process: Once verified, we will process the refund for the price difference to your original method of payment. It typically takes 1-3 business days for you to receive the refund.
At Fnirsi, we strive to provide our customers with high-quality products and exceptional customer service. Our 30-day price guarantee is just one of the ways we ensure you get the best value for your investment. Shop confidently with Fnirsi, knowing that you are always getting the best deal available.
Thank you for choosing Fnirsi. If you have any questions or need further assistance, please do not hesitate to contact our customer support team at info@fnirsi.com.
B
This is really going to come in handy with my electronics repairs and testing of USB and C ports. Gives all kinds of results! Very happy!
R
I like the presentation of FNIRSI equipment on their adverts which is why I bought this USB supply monitor and it is really good and clear to read and although the display is on the small side all the information is there. I originally bought this to to find the cause of a camera I have not charging from a power socket, to see whether the 5v supply waveform was too coarse for it. (This wasn't the case, the camera needs a switch mode power supply before it will actually accept a charge voltage). For such an economical price (UK £11) it does all you need to monitor your USB supply. Can't fault it!
M
Very nice instrument and very useful to be able to actually look at the signal to be able to see if it’s clean or not. In a small multimeter!
A
Bought the spot welder from the official shop. It lasted less than 3 welds. After discussing with support and taking apart with video and photos it was deemed broken beyond repair. They then said it would be passed onto customer service - still waiting 3 months later but no more communication. Don’t recommend and I would not buy any more items from FNIRSI. Cheap tat. I gf ave them ample opportunity. I’ll informed everyone I can plus social media. Very unsatisfied past customer.
A
Cool product at the right price
J
After ordering handeling and and packaging were fast and flawless. This little tester works without any restraints and delivers its output with speed and accuracy, as I checked. There is only one complaint I have, but considering my age people with a normal eyesight will not be bothered by it: the screen is a bit small and so are some of then(colored) letters. In my case a bigger screen would make it a lot nicer to use. Still a most recommendable and useful item!
F
Instrument de grande qualité, facile à utiliser. Fourni avec les accessoires requis et un étui pratique. Et comme toujours l'envoi est rapide, très bien emballé.
Merci à vous
A
Good quality product and fast shipping from china to USA. Good service
J
The feedback is good
N
Love the construction
P
I have found te product works as described and have found it very useful. Thank you.
A
im not sure why some users have such a hard time reading the manual, but i was able to read cable resistance on the first attempt using a $3USD, 1-3A adjustable CC load device, as stated in the manual... its so easy.. the only thing i have yet to see is any firmware updates? it would be nice to see the Ripple mode recalibrated, as my 4(KWS-X1($7), WiTRN CC1($10), HDC-085($6), OSS U-18($9)) other meters all measure alike but this meter seems to measure about 2X higher, however i understand that using a USB meter for ripple measurements should only be used as a reference. I got mine for $2 on Aliexpress so its been a great meter for the price i paid, even for $12, it offers alot of useful information.
I
FNIRSI® FNAC-28 2-IN-1 Type-C USB Tester Digital Voltmeter Ammeter Power Bank Charger Measure
S
Great
F
I don't know why it seems to me that the connections are reversed, the screen is small and if you plug it into the wall outlet it's not visible well, at least that's what it seems to me
J
FNIRSI® FNAC-28 2-IN-1 Type-C USB Tester Digital Voltmeter Ammeter Power Bank Charger Measure
g
Not one out of the 6. FNRSI products have HAVE LET ME DOWN ,supper impressed with their product range 💯😃
F
I like it! But I missing Audio Range FFT with Waterfall. AF-FFT to 20kHz with Waterfall is missing at market, now! And it is easy to program. An Option would be in Stereo.
S
This compact tester, the younger brother in the line of testers from the company FNIRSI, has proven itself to be the best high-speed tester of power and cables in any situation and in any place. Compact and lightweight. Nice color and user-friendly menu. I carry it with me all the time in my bag and can help my colleagues in tests at any time. A wonderful device and at an affordable price for everyone!
Thanks FNIRSI!
T
I'm using the portable oscilloscope for professional work and the distance finder for hobby. Both have good build quality and functionally they work as advertised. This plus the fact that the price tag for both are below the price range of similar products makes the brand favorable for me.
K
Delivery time was o.k.
The device does what it's supposed to do.
Good value for the money :-)
V
Very happy with my purchase
arrived in good condition and as described.
R
Nice small soldering iron.
E
Excellent products
M
Alles ok
J
Una vez recibido lo he empezado a usar, todavía no he terminado de darle un uso intensivo por lo que las impresiones son necesariamente parciales, pero la primera impresión es muy buena. Tiene algunas funciones en las que no me había fijado cuando lo elegí pero parecen prácticas, (protocolos de carga) espero sacarles rendimiento.
También me ha gustado la parte gráfica en la que se ven las funciones de voltaje y amperaje con respecto al tiempo. A ver si les saco partido.
La única pega que le veo, y que he visto además referida por algún desempaquetador internetero, es el tamaño de la pantalla. Es pequeña aunque muy clara y se ve bien.
Eso sí eché en falta, en el manual, algo más de información sobre la actualización del firmware y la utilización del puerto correspondiente.
La impresión general, en resumen, es muy positiva.
J
Soldering iron works great, easy to use.
One negative is that it came with faulty USB-C cable and soldering iron simply doesn´t work while connected to with included power brick. Any device connected with that cable won´t connect and there is no charge going trough that cable. Support asked for proof and after providing it no response since 18.1.2025. (todays date 26.2.2025)
Other than this one problem, soldering iron and usb analyzer work great.
C
I was pleasantly surprised by the quality and functionality of these devices and have started building up my toolset from what they have to offer.
Thanks FNIRSI Team!
G
La verdad, me encantó la pantalla donde muestra gráficamente el consumo de corriente, así que 100 puntos por eso, felicitaciones
R
FNIRSI® FNAC-28 2-IN-1 Type-C USB Tester Digital Voltmeter Ammeter Power Bank Charger Measure
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