NR-01-4672D

Definition Personnel Hazard Alarm Set

A complete electrical warning unit designed to provide an aural and/or visual signal of an imminent threat to personnel safety within a predefined area. the unit is actuated from a central control station or by automatic sequencing, but does not provide sensing or detection capability. It may contain warning devices such as a bells, buzzers, horns, sirens and/or lights. excludes alarm, over radiation.