Positives:
It works for refrigerators, dishwashers, and washing machines.
It protects as it claims, especially during frequent power outages that occur before a fault in the network or before the power is restored. The time delay is worth all the money.
In a truly problematic network on my island due to fluctuations, it is reliable.
On the negative side, but with an asterisk *
In 1.5 years, it broke (hard work).
I contacted the company where the gentleman who is also the technician (from what I understood) - was very polite and helpful and told me what usually breaks on the board, and specifically, I ordered it from there to replace it on the board. The spare part along with shipping costs 10 euros (in my area, there is no store with capacitors and related circuit board electronics).
There is a product from the same company that costs 14 euros.
I will buy again in case it breaks but the cheaper one.
I recommend it. In the electrical panel, the ones we install are clearly better but more expensive (material and installation labor, if you don't do it yourself) but still break down (I have replaced quite a few).
The electricity company, of course, does NOT compensate for anything