7 OWIS Components
The OWIS is broken into three components:
1. Master Emergency Control Panel
2. Cabling
3. Devices
The Master Emergency Control Panels can be further broken down into two sections,
1. Emergency Control Panel
2. Main Equipment
7.1 The Emergency Control Panel
The ECP consists of:
A Control Panel which contains the Auto/Manual/Isolate facility, the All Call facility, the common
System Status and Zone Status controls and indicators.
An OWS control panel which controls the manual selection of audible signals to the Evacuation
zones and an OIS control panel which controls the communication with WIP extensions.
7.2 Ancillary Components ECP
7.2.1 MICROPHONE
The microphone;
is used for the PA facility;
has a press to talk (PTT) switch; and
is normally disabled unless the ECP is in control, i.e. the key-switch is in the MANUAL position
and its REMOTE ECP IN CONTROL indicator is NOT illuminated.
7.2.2 Master OIS Handset And All Call Switch
Handset and associated cradle (RED).
7.2.3 Emergency Alarm Initiating Device (EAID)
The EAID on the ECP is one of the Alarm inputs for the evacuation zone that corresponds to the
section of the building where the ECP is located.
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