Systems and devices that operate to alert people within a facility to an emergency. 

NOTES: 

1 Examples of occupant warning equipment are emergency warning and intercommunication systems (EWIS), sound systems for emergency purposes (s.s.e.p.), smoke alarms, pagers, visual warning systems including strobe lights, hand-held alarm devices, and intercom systems. 

2 Occupant warning equipment may operate as part of a fire detection and alarm system and may function in conjunction with other emergency detection systems, such as those for storms, earthquakes and bomb threats.