The network cable tester is working properly. Unfortunately, the lid when the battery compartment is difficult to open. Therefore, when trying to open was the empty tray, the lid broke. But after I glued it back and the edges have reworked a bit, the door is now on better and.
The same conclusion:
For someone who wants to assemble a few RJ-45 cable with it, the quality is adequate and quite interesting for the price. For demanding use, this is not to use.
Who wants to work more often, should be equal to spend a little more money