- Author
- Porter, N.
- Title
- Audible and Visual Warning Devices.
- Journal
- International Fire Protection (IFP) Magazine, No. 41, 60-64, February 2010
- Keywords
- warning systems | fire alarm systems | evacuation | signals | signal detection | occupants
- Identifiers
- industrial warning signals; automatic fire systems; voice alarms; sounders; ambient background noise; strobes; wide area coverage