The type 8421 Alarm Annunciator is an integral part of the 8421 Universal display and Control (UDC) series of products designed specifically for the marine industry. It is a compact, modular solid state alarm annunciator for operation with digital (on-off) type sensors. Operating voltage is 12, 24 or 32 volts DC direct from ship's batteries. Special cables are not required.
Highly visible engraved LED type displays offer a large white engraving surface which becomes a brilliant red when turned on. LAMP type displays feature colored lenses in a compact high density format.
Up to four alarm points per module are provided using CMOS circuitry under microprocessor control. In a 19" high enclosure, up to 32 LED or 64 LAMP display alarm points are available. Dimming control is included as required.
All modules are plug-in and front removable without tools. Lenses and bulbs are front replaceable and an internal fuse is accessible on the control module. All PC boards are ultrasonically cleaned, conformal coated and system tested prior to shipment.