Alarm, Signal And Security Detection Systems

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Sub Category

includes railroad gates; flasher lights; block 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.

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

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