A.C. alarm buzzer
Air horn assembly
Alarm detection and identification system
Alarm system and remote monitor panel
Alarm system including remote signalling means
Anti-fraud alarm transmission line security system
Apparatus for supervising leads interconnecting a plurality of s
Apparatus generating noise sound for electric car
Audible alarm for a synchronous motor
Buzzer
Buzzer construction and method of adjusting the same
Buzzer with adjustable volume level
Double buzzer assembly
Electric alarm siren with arc-like runner legs
Electrocardiograph telemetry system including method and means f
Electronic control unit for intrusion system
Electropneumatic horn
High efficiency phase and amplitude matched multiple horn electr
High security alarm transmission system
Integrated fully supervised fire alarm system