It works very well, i am very satisfied. i have had many oscilloscopes over the years, but this one is the best i have had in terms of convenience, compactness and capabilities, especially for such a price.

To test my zeewii dso3d12 i first watched and then ran the code examples on an arduino r3 and esp32. Both cases the dso3d12 worked perfectly at 83hz, amp 2.43v, pkpk 3.20v, 2.00 ms

"mario's ideas youtube channel

I bought a $20 oscilloscope… is it actually any good? (fnirsi dso152)"

Further excellent youtube videos about the zeewii dso3d12 are to be found at

Uni-byte 0177 - a detailed look at the zeeweii dso3d12: part 1 of 3

Techcornertv electronics, projects & tutorials

Zeeweii dso3d12 2ch 120mhz osciloscope + multimeter + function generator



General opinion; good equipment, affordable and useful.

Amazingly accurate measurements possible. The images show the level of 1000 mV for 10 MHz.

and 120 MHz. The multimeter also provides accurate measurements, comparable to a Fluke 45.

Increases team motivation. When people see that their work is noticed and appreciated, they strive to work even better.

Accelerates professional development. Accurate diagnosis of strengths and weaknesses helps employees focus on the right aspects of self-improvement.

Creates a culture of openness. Regular feedback normalizes open communication and makes constructive criticism a common practice.

3in1 Digital Oscilloscope Multimeter Signal Generator Dual Channel 120Mhz Bandwidth 250MSa/s Sampling Rate Handheld Oscilloscope

Excellent 👌 Choice fast shipping recommend seller thanks! Πολύ καλός παλμογράφος value for money για ερασιτέχνες χόμπυ και τέλος πάντων να μετράτε αξιοπρεπεστατα!με 2 probe ! !! !το στέλνει με acs συστημένο!!!! !

All good. It arrived quickly and fulfills its function. Recommended seller. The truth is that I am very happy with it. I didn't expect so many functions in such a small oscilloscope. And the waves were even already calibrated both times. It's very good to start with. I recommend updating it to have more functions. I mean updating the firmware.

From China to Italy in 6 days thanks to shipping with Amazon Shipping. Excellent. The package arrived in good condition, the cardboard box contained in the classic plastic bag. The product is in perfect condition and working upon arrival, complete with all accessories listed on the site, it turns on, the screen is clear and well readable. Now I have to test it thoroughly.

Delivery was made on time. Unfortunately, the oscilloscope cannot measure some signals correctly - see the picture. The period is 10 ms, not 3.33 ms. The reason is that it does not use a "trigger level". For this i rate it with 4 points.

What can I say? After the reviews on YT and seeing the discounted price, it's more than just a little gem. Not too small but practical and the right compromise. The menu at first glance seems complex but in reality well-designed. Sturdy box a bit dented but interior perfect. Tried it and it has already helped me solve problems on circuits. Small downside, voice commands are not mentioned in the instructions, oh well, just search on the web..

Corresponds to the description. The screen is bright. Fast shipping and delivery! I recommend the seller!

The shipment was delivered in 15 days, packed in carton, which arrived a bit jammed, but undamaged internally and intact. The device has no other case beyond that carton, so it should be completed with aside cabinet for safe transportation and use. Nevertheless, i got a good discount on autumn sales time, to look for a kind of shell for it.

3in1 Digital Oscilloscope Multimeter Signal Generator Dual Channel 120Mhz Bandwidth 250MSa/s Sampling Rate Handheld Oscilloscope

Received. In the package as indicated by the seller. It turns on, but I haven't used it yet. Once I use it, I will add a review. I recommend it.

It arrived very quickly. It looks solid and should do the job , hopefully for many years. Looks as advertised.

Everything is great, fast shipping and delivery, unfortunately the box got a little dented during transit, but everything works very well, I am very satisfied with the device.

It is very good quality i tried actual only reading pwm freq from

Very good, I liked it!

Super oscilloscope, much better than competing products.

The oscilloscope arrived quickly and intact. Fully charged and working. Everything works well, thank you. Excellent store and product. The set with probes did not include a spring as described in the product manual, but there was another probe tip included.