Abstract: A system for monitoring a plurality of zones includes detection devices, disposed in the zones to be monitored, that emit detection signals on two different channels. A processor processes the signals and includes first and second computers, respectively connected to one or the other of the channels, and electrically isolating links that connect the first and second computers.

Abstract: System for monitoring a plurality of zones. The present invention comprises detection devices (DZM1 to DZM4, DZAP, DZLG), disposed in the zones (ZM1 to ZM4, ZAP and ZLG) to be monitored and able to emit detection signals on two different channels, as well as means (FDU) for processing said signals. These processing means (FDU) comprise first (C1A, C3A) and second (C2B, C4B) computers respectively connected to one or the other of said channels and electrically isolating links (3) connecting said first and second computers. An advantageous application of the invention relates to the detection of fire in unpressurized zones of aircraft.

Abstract: The invention relates to a water repellent composition (<<Rain Repellent>>), comprising a hydrophobic agent and a solvent compatible with the hydrophobic active agent, characterized in that the solvent comprises at least one fluorinated hydrocarbon, liquid at ambient temperature, and in that the active hydrophobic agent is a compound of organopolysiloxane type.The invention also relates to a disposable pressurized container containing the above composition and an inert gas.The invention finds application in particular in the removal of water from a surface especially the windscreen of vehicles or aircraft.