The NEW Edwards EST 3-ANNCPU3 Annunciator CPU is a fire alarm unit designed for use with EST-3 systems. Manufactured by Edwards in the United States, this CPU is a crucial component for fire protection equipment in commercial and industrial settings. With its reliable brand reputation and specific model number, this annunciator CPU ensures that facilities are equipped with the necessary safety and maintenance features to protect against fires. As a single unit quantity, this product is a valuable addition to any fire alarm system requiring compatibility with EST-3 systems.