Emergency Warning and Intercommunication

Clear Instructions When Every Second Counts

An emergency warning and intercommunication system (EWIS) tells occupants clearly what to do in an emergency and gives wardens and the fire brigade control of the evacuation. DIS Fire designs and delivers EWIS with speakers, visual alarm devices and evacuation zoning tailored to each facility, fully integrated with the fire detection system.

Safe, Orderly Evacuation

Why EWIS Matters

Clear, controlled evacuation for large and complex facilities.

Clear Communication

Intelligible voice messages reduce confusion and speed up evacuation.

Controlled Evacuation

Zoning lets wardens move people in stages, keeping egress paths clear.

Fully Integrated

Designed and commissioned together with the fire detection system for reliable cause and effect.

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Zoned Evacuation

How It Works

The EWIS receives signals from the fire panel and delivers zoned tones, voice messages and visual alarms.

Automatic Alert and Evacuation

Fire alarms trigger staged alert and evacuation tones and messages in the affected zones.

Warden Control

Emergency control panels and warden intercom points allow controlled, zone by zone evacuation.

Visual Alarm Devices

Visual alarms ensure warnings reach occupants in noisy areas and people with hearing impairment.

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Scope and Standards

Technical Specifications

Designed in accordance with AS 1670.4 and maintained to AS 1851.

Control Equipment

Emergency warning control and indicating equipment with master emergency control panels.

Field Devices

Speakers, visual alarm devices and warden intercom points selected for each space.

Zoning

Evacuation zones designed around the building’s emergency plan and fire compartments.

Frequently Asked Questions

Emergency Warning FAQs

Common questions about EWIS design, zoning and testing.

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