There are different ways to tell. Most of the cheap ones I've used have a light that is red. It is solid red when the protection is good, sporadically blinking red when the protection is fading, and barely on (if at all) when the protection is gone. Often that light is combined into the on/off switch of the strip or it could be a separate light. More expensive power strips shut down entirely and stop working (won't conduct electricity) when they have lost their protective abilities.Originally posted by: duragezic
Yeah I read an article on that a week or two ago. How are you to tell that it has no surge protection ability left? Is it just roughly average that over 3 years it will experience enough surges to wear the mechanism?