VG-3 is a new unit designed to detect Bel/Escort & Valentine detectors. from this website... http://www.rockymountainradar.com/faq_detail.sstg?id=4 .some one changed the website. if it is changed again thats fine. it was from RMR website under frequently asked questions VG 3 at the very bottom. Jim or some admin- if I posted a no no please delete the website.