Fnirsi

Fnirsi Welcome to FNIRSI. Break the Norm, Technology Within Reach. Discover more: www.fnirsi.com

We craft innovative tools for testing, measuring, and understanding electronics
— empowering engineers, technicians, and makers around the world.

06/06/2026

Spec says 200 MHz. The R&S test says something different.
For engineers and hobbyists who actually want to know what their scope can do — this is how you check.

🌐 Office: https://fnirsi.top/3PWyXJ5
$45 OFF! 🔥 code: DPOF45

Save for reference. Follow for more lab tests.

05/06/2026

Getting a weird reading on your clamp meter? You probably
skipped one step.

DC current is affected by Earth's magnetic field — always
zero your meter before measuring or the number will be off.

Also: polarity matters for DC. AC? Clamp it any direction.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/3RRFqFA
$15 OFF! 🔥 code: DMC11
🛒 Amazon: https://fnirsi.top/43H70bO

Save this if you work with DC circuits. Follow for more
practical electrical tips.

04/06/2026

Ever wonder why your phone takes forever to charge? This USB tester finally gives you the answers in real-time.
It automatically detects fast charge protocols like PD3.1 and QC on a super clear display, so you can spot "fake" chargers instantly. Perfect for tech lovers who want to optimize their setup and protect their battery life.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4dOuhwG
$8.99 OFF! 🔥 code: FNB899
🛒 Amazon: https://fnirsi.top/46duyXC

Save this for your next tech haul and follow for more gadget secrets! ⚡️

03/06/2026

Ever wonder if that capacitor is actually dead or alive? 🔌 Stop guessing and start testing! This pocket-sized 3-in-1 transistor tester gives you instant capacity and loss factor readings with just one click. It’s a total game changer for troubleshooting circuit boards and DIY projects. ⚡ Save this guide for your next repair session! 🛠️ Follow for more pro electronics tips! 🙌

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4uKoKi6
$17 OFF! 🔥 code: DTC417
🛒 Amazon: https://fnirsi.top/46SXxju

02/06/2026

Tired of lugging a massive toolbox for one simple fix? 🛠️ This pocket powerhouse is a 3-in-1 oscilloscope, multimeter, and signal generator. It’s light enough to carry anywhere but pro enough to handle 99% of your repair jobs. Save this for your shop wishlist! What’s the one tool you can’t live without? 👇

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4dDvTuv
$10 OFF! 🔥 code: DST10
🛒 Amazon: https://fnirsi.top/46o7ML9

01/06/2026

Natural language focused on the "Exploding Capacitor" hook.
Worried about your capacitors going boom? 💥 This tiny powerhouse features built-in 30V burn protection to keep your electronics repair safe and precise. It measures everything from ESR to inductance in seconds, making it a must-have for any bench.

Perfect for batch-testing SMD components with smart sorting—no more manual guessing.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/42HTtA0
10% OFF! 🔥 code: ST2TEN
🛒 Amazon: https://fnirsi.top/4iFqjIQ

Save this for your next project and follow for more bench hacks! 🛠️

29/05/2026

Still getting messy or inaccurate readings on your oscilloscope? 📉 Master these 5 essential fixes—from matching probe attenuation to the 5X bandwidth rule—to ensure pro-level accuracy in every measurement. Whether you're debugging a PCB or testing automotive sensors, these tips will protect your equipment and your sanity. 🛠️⚡️

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/3R9DSGT
$45 OFF! 🔥 code: DPOF45

Save this guide for your next bench session and Follow for more pro electronics hacks! 💾✨

28/05/2026

Stop getting false readings! 🛑 Most people clamp all wires at once, but that’s for leakage detection, not working current.

Learn the correct way to measure AC/DC current using the FNIRSI DMC-100. This 10,000-count True RMS meter makes DC accuracy easy with its 'Data Zeroing' function, ensuring you never miss a precise reading during home diagnostics or car repairs.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4997CK7
$15 OFF! 🔥 code: DMC11
🛒 Amazon: https://fnirsi.top/43H70bO

Save this guide for your next project and follow for more pro electrical tips! 🛠️⚡

🎉 FNIRSI IS TURNING 10! 🎉For the past decade, we’ve committed to making professional measuring instruments accessible to...
28/05/2026

🎉 FNIRSI IS TURNING 10! 🎉

For the past decade, we’ve committed to making professional measuring instruments accessible to engineers, makers, and geeks worldwide. None of this would be possible without your trust and feedback.

Let’s celebrate with the biggest deal of the season!
👇 👇 👇
🔥 SPECIAL 10TH ANNIVERSARY OFFER: GET 12% OFF ANY ORDER! 🔥

🎫 Promo Code: FN10ANN
⏰ Limited Time Only: Active until May 31, 2026, 23:59 PDT

✅ Stackable Savings: Combine this code with current store discounts to maximize your budget!
✅ Global Shipping: Upgrading your lab has never been easier.

🛒 Shop the Anniversary Sale Now: https://fnirsi.top/4vdogk8

What’s your favorite FNIRSI tool on your bench? Let us know in the comments! 👇

27/05/2026

Stop guessing your circuit issues! 🧐
Here is exactly how to safely check crystal oscillators, test mains power, and read clean switching supply waveforms like a pro. Perfect for anyone troubleshooting electronics at home.

👇 Curious how this works on your bench?
Check the details on the following
🌐 Office: https://fnirsi.top/4wzgiU9
$40 OFF! 🔥 code: 350P40
🛒 Amazon: https://fnirsi.top/3KzWso0

💾 SAVE this for your next bench project, and drop a comment on what component we should test next!

Address

61-65 Chatham Road South, Flat/Rm S239, 2/F, The Capital
Shenzhen
999077

Telephone

+8619125396241

Website

https://s.click.aliexpress.com/e/_c3CAJbMH, https://fnirsi.top/Amazon_US_Stor

Alerts

Be the first to know and let us send you an email when Fnirsi posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Fnirsi:

Shortcuts

Share

Category