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The inside of the device is opened with 4 screws and 2 AAA batteries are inserted. Material quality is very good. He gets his measurements right. I wish it was more practical to install batteries.
All right, all right!
Excellent tool.
very good tool to check the power sockets, works as advertised
Good product!
tested and works correctly, you have to remove the four screws and put batteries
***
very nice
ok
all good