Security signalling or alarm systems, e.g. redundant systems

Introduced: January 1990

Last revised: January 2006

Full Title

Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation > Security signalling or alarm systems, e.g. redundant systems

Classification Context

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