An extinguishing device for fitting on a housing of an electrical unit, on a monument in aircraft cabin or in a cavity in a structure of an aircraft, the extinguishing device comprising:
- a base element for being held in a holder which is configured to be fastened on the housing of the electrical unit, on the monument in the aircraft cabin, or in the cavity in the structure of the aircraft;
- an extinguishing agent container comprising a closed casing and configured to hold an extinguishing agent, provided on the base element;
- a triggering device connected to the extinguishing agent container and configured to act on the casing of the extinguishing agent container in response to receiving a triggering signal such that an extinguishing agent held therein is released into a surrounding area of the extinguishing device;
- and
- a data transmission device mounted on the base element, and having a data store in which an identifier unique to the extinguishing device is stored and connected to the triggering device for transmitting signals;
- wherein the data transmission device is configured to send a warning signal via a network to a control unit in response to the triggering device receiving the triggering signal, wherein the warning signal contains the identifier.