Transmitter 3 : (1) A radio capable of sending electronic signals. (2) A fire alarm system component connected to initiating devices that indicate the status of the initiating devices and circuits
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}