Portable, blinking alarm status and theft deterrent indicator
Programmable emergency signalling device and system
Programmable emergency signalling device and system
Radio synchronized warning light system
Received light level indicating system for beam sensor
Sequentially actuated flashing light apparatus
Strobe alarm circuit
Strobe circuit
Strobe synchronization for averting convulsive reactions to stro
Strobe warning light
Strobe warning light
Switch construction responsive to motions of a wearer
Synchronization circuit for visual/audio alarms
Synchronization circuit for visual/audio alarms
Synchronized strobe alarm system
Variable candela strobe
Variable candela strobe with constant trigger voltage
Variable pulse distribution electro-optical system
Visual signaling system
Warning light system for use with a smoke detector