The best brand of all for a safety power strip. I searched for many but. Surge I learned from electricians that I cannot generally cause to test if the protection from surge is true. I thought to see if this specific power strip is good in terms of overload. I plugged in 2 electrical devices and a heater and after 10 minutes the power strip's relay tripped. That's good. That's how it should be. Since it worked under overload, it should logically protect against surge as well. Another fake power strip that I tried, just like I did with the other power strip, caused the circuit breaker to trip instead of the power strip's relay. That's bad. That shouldn't have happened. So it doesn't provide protection against overload and surge. They were selling it as a power strip with protection against overload and surge. Never Crystal Aidio again. There has been an incident where surge from the power grid of the D.E.H. burned machines or happened to some friends and acquaintances in the past. I would prefer if the power strip had more outlets, although I don't think it's possible. I had to put a power strip in a power strip. Under low load, of course.