Facilities must install a remote, battery-powered alarm annunciator located outside the generator room in a position readily observable by operating personnel. The annunciator must be hard-wired to indicate alarm conditions of the emergency power source and cannot be replaced by a centralized computer or building information system. This requirement references NFPA 99 standards for essential electrical systems.
View official sourceK916 Electrical Systems – Essential Electric System Alarm Annunciator A remote annunciator that is storage battery powered is provided to operate outside of the generating room in a location readily observed by operating personnel. The annunciator is hard-wired to indicate alarm conditions of the emergency power source. A centralized computer system (e.g., building information system) is not to be substituted for the alarm annunciator. 6.4.1.1.17, 6.4.1.1.17.5 (NFPA 99)