Hi everybody.
Yesterday i recieved this item:
View attachment 39938
That is the operating instructions:
View attachment 39939
My objective was to detect the internal polarity of each electronic/electric device.
This item really works !!! I have confirmed that all my audio system is right connected.
As my mono amplifiers has hum sound since day one i began to test all the rest of the electric devices of my home.
I discovered refrigerator and coffee machine were connected out of phase.
Once everything tested and rightly connected amplifiers hum sound has gone.
Now i haven’t any ground loop.
Highly recommended !!!!