EEVblog 1723 - AlienTek DM40 Multimeter/Oscilloscope Review
Added 2025-12-05 05:59:05 +0000 UTC
Comments
Note: US tariffs make the full package over US$500 on AliExpress. That'll hopefully change before long. Request: Whenever you test a 60000-count multimeter, it would be great if there were a quick side-by-side (thumb up/down) comparison to the 121GW (and other EEVBlog meters) for features and accuracy. My brain can't track all the individual specs very well, but I sure know what my 121GW can do! These days, I find I'm not using my 121GW as much as I used to, as I'm doing less bench work and more in situ work on friend's homes and my own home automation projects, plus probing around on my EV. My main tool today is my CM210E AC/DC clamp-on multimeter along with a house wiring circuit tester/tracer. But I do occasionally find myself in a spot where I wish I had a tiny 10 MHz o'scope with a basic protocol analyzer (RS-485, CAN, etc.) for checking devices for malfunctions (mainly to separate software/firmware errors from erratic hardware before dragging anything to the bench). If I can find a better price, I'm wondering if this device may be worth it for the tiny o'scope alone.
BobC
2025-12-05 19:34:19 +0000 UTCLooks not bad. I mean as a field meter or even a small home lab diagnostics instrument it is handy to have around. As to USB control, well unless you plug into a Linux box and start sniffing, you'll never know. The BT stream can polly be hacked for sure and so potentially 3rd party open source apps could be used to pull data from it to a desktop. Thanks for sharing.
veritanuda
2025-12-05 10:51:54 +0000 UTC
