Living in a rural small town we have to live with lightning strikes, fallen tree limbs in hilly terrain and not to mention an occasional squirrel shorting out a trans former. I have several units I use on TV, Radios, etc. Over the years the units have paid off in the long run. They have been use for at least 6 years.
The surge suppressor appears to be well designed, and executed. It is easy to set-up and use.. the 15 Amp./790 joules rating is sufficient for most small office uses...