Central alarm receiver or annunciator arrangements

Introduced: January 1990

Last revised: January 2006

Full Title

Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems > Central alarm receiver or annunciator arrangements

Classification Context

Section:: PHYSICS
Class:: SIGNALLING
Subclass:: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS