The General Services Administration has authorizetdh e useof this commercial item
description(CID) for all federal agencies.
l . SCOPE. This CID covers horns and buzzers usedin 12- or 24-volt(V) direct current(dc)
circuits as warning signalisn tactical vehicles, combat vehicles, and other equipment operating
under severe and extreme conditions of shock, vibration, and climate.
2. CLASSIFICATION. Horns and buzzers are of the following types and classes:
Type I - Horn, air-actuated, electrically controlled.
Type II - Horn, electrically-actuated.
Type III - Buzzer, electrically-actuated.
Type IV - Hom, electrically-actuated(12 V dc),