The Volt Stick LV50 is the only instant voltage detector approved by Cadent and is a mandatory device for all Cadent engineers and sub-contracted engineers. http://[email protected]/phpinfo.php?a%5B%5D=Gas+Safe+Engineer+Software+%28%3Ca+href%3Dhttps%3A%2F%2Fwww.lurkerlounge.com%2Fforums%2Fuser-373927.html%3EHttps%3A%2F%2FWww.Lurkerlounge.Com%2FForums%2FUser-373927.Html%3C%copyright%3E%29%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttps%3A%2F%2Fcanvas.instructure.com+%2F%3E