apparently very effective

I decided to invest in quality, "lifetime guarantee" and based on the evidence, having had several appliances damaged due to lightning or power surges (6 aircraft in 4 months!) since I plugged the new devices on it, no problem, and that is 6 months, I hope it will last !! I have recommended it to my neighbor, ditto, plus she was recently hit by a storm, all devices (including 'computer) have been protected! we are delighted both! long may it last!