Mechanical device for signaling the occurrence of an unwanted condition, such as a Fire, burglary, or the unnecessary activation of a Fire-suppression system in order for corrective action to be taken.
The Rantings of the barely human.
Mechanical device for signaling the occurrence of an unwanted condition, such as a Fire, burglary, or the unnecessary activation of a Fire-suppression system in order for corrective action to be taken.