Special Features:

Lens legend show (a dash line between 0.030 and 0.040 inches wide); uses 2 miniature incandescant lamps (28 volts each) (ansi number 6838) ; housing for annunciator is alluminum alloy 6061-t6, per sae ams qq-a-250; lens material is glass

Properties:

A signaling apparatus which operates electromagnetically and serves to indicate visually, or visually and audibly, whether a current is flowing, has flowed, or has changed direction of flow in one or more circuits. It is usually employed in connection with alarms, electric bells, or buzzers. See also alarm (as modified).