Emergency condition lighting controller
Evacuation assistance system
Flashing light siren alarm
Frequency-matched signal device for persons with impaired hearin
Hand-worn warning device and method
Infant monitoring system for automobiles
Light and alarm device
Low voltage speaker and lighting system
Mannequin
Method and apparatus for adjusting audible and visual...
Method and apparatus for conveying audiovisual information
Multifunction visitor information system
Overhead warning device
Personal security alarm
Personal security alarm with twin lights
Portable safety light and audible signal apparatus
Position locating device
Power saver circuit for audio/visual signal unit
Programmable doorbell control
Programmable doorbell control