So far, everything is good! I didn't have a good experience with the surge protector I had!

With the surge protector, I was getting 4/50mbps, while simply connecting it to a T without the surge protector, I get 38/50. The total length of the connecting cable from one powerline to the other is 20 meters.

If synchronization gives you trouble, simply synchronize it once and both to the same outlet (as recommended by the manufacturer).

The power-saving function is very accurate, as soon as the LAN network wakes up (when you turn on the connected device), the device opens and synchronizes immediately.

For 25 euros, it's not worth it!

Update 2/7/2023
Over 6 months have passed, I bought it to make the Vodafone TV work, which doesn't have Wi-Fi... Everything is perfect so far!

Excellent within 1 minute
I connected them and they don't lose almost anything (34 out of 42) on the top floor from the ground floor

The only one of its kind that works continuously and on surge protectors without any problem. Tested and it even passes the OTE TV VLAN.

It is the worst powerline I have ever tried. Within a year and a half, I have already changed 4 of them. It constantly disconnects, its speed is quite slow, and they break every 4 months. It is terrible. Even though it is within the warranty, I cannot keep changing powerlines every 4 months. Stay away from this particular product.

Positives: Very easy setup with just one button. Easily connects with third and fourth devices of the same company.
Negatives: Limited range, may not be suitable for large residential complexes. Loses speed as distance increases. Of course, I have not compared it to other similar products, they may also have the same issue.