The extinguishing effect of inert gases is achieved by displacing the oxygen in the air. Assets are protected by the slow response that is typical of inert gases. In this case, nitrogen is not poisonous and is particularly well-suited for protecting highly frequented areas, while argon and carbon dioxide, which is heavier than the surrounding air, pervades the ground-level flood area quickly and thoroughly.
The extinguishing gas Novec™ 1230 works through chemical/physical intervention in the combustion process. It is electrically non-conductive and is often used to protect IT assets.