Progressive engineering corporation offers a range of products to guard individual`s privacy from intrusions like pin-hole video cameras and tapping devices. Wireless signal detectors and signal isolators can counter these spying gadgets, with the help of which one can immediately find out such secret devices within a range from 1 to 10 metres, and protect individual`s privacy. With isolators it is possible to disarm and render useless wireless spy cameras and other wireless recording devices. Signal isolators for mobile phones are useful for prohibiting cellular mobile phone interference in theatres, conferences, cinemas, art galleries, offices, libraries, schools and most important in refineries as well as petrol stations where hazardous gases are in atmosphere and explosion can be sparked by use of cellular phones. The range includes detectors, signal isolators/jammers, mp3000 cellular disabler, and plp-1 - safe guard against secret tapping of telephone land line.