--- product_id: 523474415 title: "FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester, 500Khz Bandwidth 10MSa/s Sampling Rate, 6 Types of Waveforms, Transistors Measure" brand: "fnirsi" price: "313.42 DT" currency: TND in_stock: true reviews_count: 13 category: "Fnirsi" url: https://www.desertcart.tn/products/523474415-fnirsi-dso-tc3-oscilloscope-3-in-1-handheld-oscilloscope-dds store_origin: TN region: Tunisia --- # 10 MSa/s sampling rate 500 kHz bandwidth Built-in rechargeable lithium battery FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester, 500Khz Bandwidth 10MSa/s Sampling Rate, 6 Types of Waveforms, Transistors Measure **Brand:** fnirsi **Price:** 313.42 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your electronics game with the ultimate 3-in-1 handheld oscilloscope! ## Quick Answers - **What is this?** FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester, 500Khz Bandwidth 10MSa/s Sampling Rate, 6 Types of Waveforms, Transistors Measure by fnirsi - **How much does it cost?** 313.42 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/523474415-fnirsi-dso-tc3-oscilloscope-3-in-1-handheld-oscilloscope-dds) ## 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 - • **Compact & Portable:** 2.4-inch TFT display with rechargeable battery keeps you powered on-the-go. - • **All-in-One Powerhouse:** Oscilloscope, signal generator & transistor tester combined for ultimate field versatility. - • **User-Friendly Auto Mode:** One-key AUTO function instantly displays waveforms without tedious adjustments. - • **Precision Waveform Mastery:** Supports 6 waveform types including sine, square & triangle for diverse signal analysis. - • **Smart Semiconductor Testing:** Auto-detects transistor types & pinouts with accurate gain and NEC IR code analysis. ## Overview The FNIRSI DSO-TC3 is a compact, handheld 3-in-1 device combining a 500 kHz bandwidth oscilloscope, DDS signal generator, and transistor tester. Featuring a 10 MSa/s sampling rate and 2.4-inch TFT display, it supports six waveform types and offers automatic transistor identification including NEC IR code analysis. Powered by a rechargeable lithium battery, it’s designed for professionals and hobbyists needing versatile, portable electronic diagnostics. ## Description Product description FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester Handheld Oscilloscope DSO-TC3 oscilloscope has a real-time sampling rate of 10MS/s and a 500kHz bandwidth. With complete trigger function (Single, Normal, Automatic), it can be used freely for both periodic analog signals and aperiodic digital signals. Up to ±400V voltage signal can be measured. Equipped with efficient one-key AUTO, the measured waveform can be displayed without cumbersome adjustment. Transistor Tester DSO-TC3 is especially suitable for fast pairing of transistors, identification of mixed surface mount and wordless components, and preliminary screening of small batch components. DSO-TC3 can automatically identify and measure various transistors.Including NPN and PNP transistors, N-channel and P-channel field effect transistors, junction field effect transistors, diodes, dual diodes, thyristors, and resistors, inductors, capacitors and other passive components. Automatic detection of pin definition. Automatically analyze NEC protocol infrared code. DSO-TC3 also can identify device type, pin polarity, hFE, turn-on voltage, junction capacitance; can test capacitance, resistance, inductance components, etc. Function Signal Generator The signal generator has a total of 6 waveforms to choose from, with adjustable frequency and amplitude. Triangle wave : 1-10KHz/0-3.3V/50%. Square wave : 1-100KHz/3.3V/50%. Pulse wave : 1-100KHz/3.3V/0-100%. Triangle wave : 1-10KHz/0-3.3V/50%. Ramp : 1-10KHz/0-3.3V/0-100%. DC 0-3.3V Tool Box Automatic detection of pin definition. Automatically analyze NEC protocol infrared code. Other functional modes: Including circuit continuity test, 0~40V input voltage measurement, PWM output,0~32V regulated diode measurement, DS18B20 temperature sensor measurement, DHT11 temperature and humidity sensor measurement, etc. DSO-TC3 Basic Parameters Display screen：2.4 inch TFT color screen, LED backlight Supply voltage：Rechargeable lithium battery Charging specififications：USB Type-C，+5V Product volume：79*103*31mm Bracket specififications：All-in-one foldable stand Package List 1. DSO-TC3*1, 2. P6100 High Voltage Probe*1, 3. Adapter*1, 4. Ordinary Probe*1, 5. Test Hook*3, 6. Packing Box*1, 7. Manual*1, 8. Type-C Charging Cable*1 Review: Missing Parts ??? - OK. I needed an inexpensive scope for occasional audio repair & field work. You need to have adapters to use the scope with standard BNC probe & gnd. connectors. The tester on the front panel I'm surprised is accurate for transitor/diode/res readings. Was unable to use the scope portion as there is a package needed with the probe & grd. lug to adapt BNC to the mini input connectors. The company said desertcart was responsible for any missing items as the shipper. desertcart insisted Fnirsi should provide missing items. To keep drama to a minimum I am returning the item as defective while desertcart ships me a replacement that hopefully has all I need to use the scope. Will add to my review when I receive a complete unit. Really hated returning it as the semiconductor front panel test portion was very accurate & hoping the replacement is equally accurate. OK so I returned the unit that was missing certain items & just received the replacement DSO-TC3. It had all the items that were missing from my original order. I give the front panel semiconductor test a try & am impressed by the accuracy & ease of use. As an added bonus I didn't know it also had an infra-red device tester that not only verifies if the TV or stereo remote is working but also gives you all the codes. I give this a 5star plus for these features. I haven't tested the scope probe yet but I'm sure it'll work fine within it's parameters. Good for audio but may not for RF work but then again it's specs weren't designed for those frequencies. Overall I am very satisfied & would recommend this for anyone who tinkers with electronics. This device does quite a bit for it's modest price. Review: Almost perfect but failed at checking a 680 ohms resistor - This is a really cool product and the auto detection of parts being test still a bit immature IMHO. I bought this mostly for checking parts. Most of the time, it will identify the part and checks correctly. However, it unexpectedly fails at checking a 680 ohm resistor. I did a calibration just to rule out user error but it still doesn't recognize the resistor. The check took a much longer for the resistor and it came out as a capacitor. The resistor is verified with a multimeter. I would use this device however I will also double verify with another known good meter. ## Features - FNIRSI DSO-TC3 ingeniously integrates digital oscilloscope, electronic component tester, function signal generator and other functions into one. Equipped with 2.4 Inch TFT display. Built-in rechargeable lithium battery - DSO-TC3 handheld oscilloscope, 10 MS/s sampling rate, 500 kHz bandwidth. It can be used freely for both periodic analog signals and aperiodic digital signals. Equipped with one-key AUTO, the measured waveform can be displayed without cumbersome adjustment - DSO-TC3 transistor tester can identify and measure various transistors, including NPN and PNP transistors, N-channel and P-channel field effect transistors etc. Automatic detection of pin definition. Automatically analyze NEC protocol infrared code - DSO-TC3 transistor tester is suitable for pairing of transistors, identification of mixed surface mount, and preliminary screening of small batch components. "Mos Test" mode can test various types of transistors and test capacitance, resistance etc - Other functional modes: Including circuit continuity test, 0-40 V input voltage measurement, PWM output, 0-32 V regulated diode measurement, DS18B20 temperature sensor measurement, DHT11 temperature and humidity sensor measurement - Six waveforms: sine, square, pulse stroke, triangle, ramp and DC ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BV9X733J | | Best Sellers Rank | #68,308 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #30 in Lab Oscilloscopes | | Brand | FNIRSI | | Brand Name | FNIRSI | | Customer Reviews | 4.2 out of 5 stars 222 Reviews | | Included Components | DSO-TC3 Oscilloscope, Other Accessories | | Manufacturer | FNIRSI | | Model | DSO-TC3 | | Number of Items | 1 | | Part Number | DSO-TC3 | | Power Source | Battery Powered | | Style | DSO-TC3 | | Style Name | DSO-TC3 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 85 Degrees Celsius | | Warranty Description | 60 days manufacture | ## Images ![FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester, 500Khz Bandwidth 10MSa/s Sampling Rate, 6 Types of Waveforms, Transistors Measure - Image 1](https://m.media-amazon.com/images/I/71uPS5nk2nL.jpg) ## Questions & Answers **Q: Can this output to programs on a computer?** A: DSO-TC2 cannot transfer data to computer **Q: What adapter do i need to be able to connect the bnc probe?** A: Thanks for your question. You need an MCX adapter to connect the BNC probes. **Q: Does it have a 10x probe to handle high voltage up to 400vac?** A: Yes, the 10X probe is included in the DSO-TC3 kit for measuring voltages up to 400V **Q: What is the pixel resolution of the display?** A: The screen of FNIRSI DSO-TC2 adopts a 2.4-inch TFT color screen with a screen resolution of 240*320 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Missing Parts ??? *by G***R on January 31, 2024* OK. I needed an inexpensive scope for occasional audio repair & field work. You need to have adapters to use the scope with standard BNC probe & gnd. connectors. The tester on the front panel I'm surprised is accurate for transitor/diode/res readings. Was unable to use the scope portion as there is a package needed with the probe & grd. lug to adapt BNC to the mini input connectors. The company said Amazon was responsible for any missing items as the shipper. Amazon insisted Fnirsi should provide missing items. To keep drama to a minimum I am returning the item as defective while Amazon ships me a replacement that hopefully has all I need to use the scope. Will add to my review when I receive a complete unit. Really hated returning it as the semiconductor front panel test portion was very accurate & hoping the replacement is equally accurate. OK so I returned the unit that was missing certain items & just received the replacement DSO-TC3. It had all the items that were missing from my original order. I give the front panel semiconductor test a try & am impressed by the accuracy & ease of use. As an added bonus I didn't know it also had an infra-red device tester that not only verifies if the TV or stereo remote is working but also gives you all the codes. I give this a 5star plus for these features. I haven't tested the scope probe yet but I'm sure it'll work fine within it's parameters. Good for audio but may not for RF work but then again it's specs weren't designed for those frequencies. Overall I am very satisfied & would recommend this for anyone who tinkers with electronics. This device does quite a bit for it's modest price. ### ⭐⭐⭐⭐ Almost perfect but failed at checking a 680 ohms resistor *by A***T on June 4, 2023* This is a really cool product and the auto detection of parts being test still a bit immature IMHO. I bought this mostly for checking parts. Most of the time, it will identify the part and checks correctly. However, it unexpectedly fails at checking a 680 ohm resistor. I did a calibration just to rule out user error but it still doesn't recognize the resistor. The check took a much longer for the resistor and it came out as a capacitor. The resistor is verified with a multimeter. I would use this device however I will also double verify with another known good meter. ### ⭐⭐⭐⭐⭐ I MUST HAVE! *by L***C on January 24, 2025* “I couldn’t be happier with this purchase! The quality is outstanding, and it’s clear a lot of thought went into the design and functionality. This product has exceeded my expectations in every way, offering a perfect balance of performance, durability, and style. What truly sets this product apart is how well it delivers on its promises. It’s incredibly easy to use, and you can tell it’s built to last. Whether you’re looking for something reliable for everyday use or a high-performing option for special occasions, this is it. On top of all that, the value for the price is unbeatable. It feels like a premium product without the hefty price tag. If you’re on the fence about getting this, don’t hesitate—trust me, you won’t regret it. This is one of those rare finds that ticks every box!” ## Frequently Bought Together - FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester, 500Khz Bandwidth 10MSa/s Sampling Rate, 6 Types of Waveforms, Transistors Measure - FNIRSI DMT-99 Digital Multimeter 9999 Counts TRMS, Rechargeable Auto-Ranging Volt Meter with Recording and Monitoring Data Mode, Resistance, Capacitance, Diode, Frequency, NCV, Current Voltage Tester - FNIRSI LCR-ST1 10KHz LCR Meter Tweezer, Mini Smart SMD Tester, ESR Meter, Multimeter, Capacitance Inductance Continuity Diode Tester, Auto Component Recognition Electronic Component Analyze --- ## 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.tn/products/523474415-fnirsi-dso-tc3-oscilloscope-3-in-1-handheld-oscilloscope-dds](https://www.desertcart.tn/products/523474415-fnirsi-dso-tc3-oscilloscope-3-in-1-handheld-oscilloscope-dds) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-24*