Calorimetric flow monitor
Cargo monitor apparatus and method
Cash register security system
Catalytic detecting apparatus for detecting combustible gases an
Centralized monitor and alarm system for monitoring remote areas
Centralized monitoring system for gas leakage
Charge monitor for electric battery
Child care communication and surveillance system
Christmas tree fire detector and alarm
Circuit arrangement for automatic level control for optical sens
Circuit arrangement for monitoring interruptions in two closed-c
Circuit energization indicator with thermal timing means to main
Circuit for detecting burned-out lamp for a buoy lamp changer
Closed space integrity
Coded electronic security system
Collision-responsive alarm with a rotating reflector and warning
Combination door chime and particulate products of combustion de
Combination smoke and heat detector alarm
Combination smoke detector and lamp structure
Combustion detection device