Whatever media is in use, foam, water mist, sprinklers, gas or water they are being activated after a fire has been detected. With the common and known methods fire is being fought only reactively. Often the damage caused by the extinguishing media is worse than the damage caused by the fire itself. Furthermore, there are many applications where the usage of water or gas would be fatal in its consequence. Applications like e.g. Data Centers, Server Rooms, Cold Stores, Paper Mills and many more. Whenever electricity comes into play the usage of water could end in a total disaster. Huge storages like cold store could not be flooded from a gas reservoir for example.