To my dismay, a rather smart product used for lightning protection has overnight been made obsolete to the point of destruction. I have used Helita products to my satisfaction, but this time, found that the accreditation was obsolete - as BSI certification was out of date. I took the issue to my PI insurer - but no BSI validation - no justification for use ! Curiously, it is still advertised in the brochure - naughty naughty ! BUYER BEWARE !!!