FSG 63 | Alarm, Signal And Security Detection Systems

Excludes railroad signals.

Includes railroad gates; flasher lights; block signals. Excludes semaphore flag signals.

Includes oxygen pressure signals and warning devices; such as air pressure warning signals, aircraft crew warning signals, altitude warning signals, alarm controls, audible landing gear alarms. Excludes aircraft engine oil and fuel warning devices.

Includes anti-intrusion alarm systems; foghorns; gongs; chimes; bells; burglar alarm systems; fire alarms; police alarm systems; sounding devices; manual gas alarms; landing wands; security inspection systems Excludes loran; radar; sonar; engine oil and fuel warning devices; aircraft oxygen warning devices.