to be honest ive ofted wandered why manufacturers have never put the systems in as standard any one remember the halon one's?? nearly killed you when they went of in the cockpit!! lol removes all the air in the surrrounding area-cough-cough ha-ha there are very good/essential /mandatory in rally cars etc they just sit there waiting+waiting+waiting!!!!!!
once installed/armed------------ -DONT TEST!!!!!!!!!!!!!!!!!!! you will get a full discharge- and a re-fill is as costly as the tank(or used to be). guru7001/2 nottingham