Good day,
I clearly understand that this topic, the "UNI-T UT71D review", has been created and posted a little while ago, nevertheless I would like to take a moment and thank Wytnucls for his great and pretty much indepth review of this DMM.
I do have one on my workbench, for over 2 years now, and it does a good job for me. As previously stated, there are quite a few nice features for the price. For an electronic hobbyist like me, this is an adequate tool. I rarely use it for main voltage. I used it a few times to troubleshoot some electrical wiring in the breaker panel, but these times were really the exception to the rule.
One feature, that I somehow consider as poorly designed, is the SEND function, used for pre-recorded readings. For example, while doing some experiment with solar cells, batteries and LEDs, I used my DMM to take readings every minute and let it go for 12 hours or so.
What I disliked about the overall thing is that when time came to send the data back to the computer, the program didn't take into consideration my interval setting of 60 seconds between each reading. It actually took the current computer's clock time and used that as the timestamp. Since the unit is sending roughly 15-16 entries per second to the computer, I ended up with time intervals averaging 65ms instead of the 60 seconds I initially set it at the beginning.
Fortunate enough each entry have its own number, incrementing by 1, so I used that to recalculate the adequate timestamps. This is not a catastrophic issue but when you're not prepared for that, it surely takes you by surprise and "Plan B" must show up quickly if you want to resume your work.
Despite that little misadventure, overall I'm really satisfied with this DMM. Great deal for the features and the price was right for an hobbyist like me with a somehow limited hobby budget.
Thank you again Wytnucls for posting this extended review.