Actuation by presence of smoke or gases {, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means} by using a detection device for specific gases, e.g. combustion products, produced by the fire
Actuation by presence of smoke or gases {, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means} by using a detection device for specific gases, e.g. combustion products, produced by the fire