A part of the review has been auto-translated.
This multi-tester is great! It does everything it claims, and it does it well. Only negative here is that the software is based on an open-source project, but they have not made their modifications available. So while this could be firmware-upgraded (it is based on an Atmel chip), you would have to make a lot of modifications to the open-source code to support this unit. The open-source project has since added a lot of new tests and fixed some tests that were incorrect, so it would have been great if they had made it possible to upgrade this unit.
The TC1 does not meet all of Daniu's specifications. In particular, the large errors in measuring battery voltages and in measuring the DC resistance of coils are very disturbing. On the positive side, this is one of the only inexpensive testers that can be used to quickly measure the zener voltage of a zener diode. The good recognition and clear display of all kinds of semiconductors also speaks in favor of this tester. A big advantage is the built-in rechargeable battery, so you never have to change batteries. Recognising and displaying IR codes is a funny extra functionality, but you won't often find it useful in practice. Two points of criticism are that you cannot test SMD components and that the colours of the three test cables supplied do not match the colours shown on the display. Fixing this last point wouldn't have cost a penny more! What would make the TC1 extra attractive is if the manufacturer decided to connect the three test leads to the housing via 2 mm banana plugs. It is quite a hassle to mount the three leads in the ZIF-socket in a good way.