Alert for indicating validity of removable memory media

Anti-collision warning lights and method of use

Apparatus and method for displaying system state information

Apparatus and method for displaying system state information

Apparatus and method to display network connection status on a j

Audio power meter

Bi-color light source for indicating status of information...

Board ID display system

Circuit for controlling a plurality of light-emitting...

Circuit for controlling a plurality of light-emitting...

Circuit for driving network indicator

Circuit for providing electrical current to a bicycle device

City bus line enquiry machine

Compact light emitting diode retrofit lamp and method for...

Computer power indicator circuit

Control panel of a laundry processing machine

Cross fade indicators

Data transfer indicator circuit

Decorative lighting system and decorative illumination device

Device for identifying a person or an object