Access annunciator

Access control device with electronic identification and...

Accident sound detection circuit

Acoustically responsive portable emergency light

Alarm alerting method and apparatus

Alarm apparatus

Alarm apparatus for detecting disturbance or other change of con

Alarm device with multiple indicators and flameproof housing

Alarm kit apparatus

Alert device having notification-based customizable settings

Ambient condition detector with variable pitch alarm

Apparatus for and method of providing an indication of the magni

Apparatus for leaving message on refrigerator

Apparatus for providing a visual indication of receipt of an...

Article identification device

Audible content with training information

Audible warning device with restrainable, shock-activated cocked

Audio alerts in physical environments

Audio coordinated visual indicator

Audio system alarm interface