Audio-visual alarm system with address display
Audiovisual player system
Automated door knocker
Automatic alarm display processing system in plant
Automatic door warning system
Automatic door warning system
Automatic gas spray device & its safety system
Automatic voice device for fire extinguisher
Auxiliary alarm
Barking dog simulated alarm system
Beeper system
Blanket with audio device
Book organizing device
Building emergency path finding systems and method
Cargo container having an audio system
Child seat simulation system
Child's personal security assistant
Circuit for the controlled return of a pointer driven by a...
Combined burglar frightening device and alarm
Communicative environmental alarm system with voice indication