Therefore, I have to compare times screwed a No Name overvoltage protection (with a price from 1.95 to 3 euros) and see absolutely no difference between cheap and expensive! Electronic components come anyway, all from China.
The No Name overvoltage protection is wertig processed with a stable housing, even has a filter capacitor (filtering disorders) and how you can also see clearly meet all the requirements regarding fire protection.
So overvoltage protection need not be expensive! , Each one should now get an idea for yourself ...
(See attached photo!)