The QE90 Emergency Warning and Intercommunication System (EWIS) is designed to facilitate the orderly evacuation of a building in the event of an emergency. The evacuation may be initiated automatically by a Fire Alarm system, or by a building occupant operating an emergency call-point. Integrating a flexible alarm and voice warning system with a dedicated emergency intercom system, the QE90 allows fire wardens or emergency services personnel to easily control and coordinate rapid building evacuation. The QE90 meets the control and indicating equipment requirements of installation standard AS1670.4, complies with equipment standard AS2220.1 and supports the ISO8201 evacuation signal.