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2.7 Interconnecting Alarms
With interconnected Alarms, when one device detects Fire all detectors will alarm. All horns will
sound but only Alarms detecting the emergency event will be flashing their red LED alarm indicator.
Heat Alarms should always be interconnected to Smoke or Multi-Sensor Fire Alarms to ensure
early warning.
Note: A maximum of 12 Fire / Smoke / Heat / CO Alarms and accessory devices can be interconnected
in an Ei Electronics Alarm system. (Any Ei3000 series Alarm can also be interconnected to an Ei2110e,
Ei160e and Ei140RC Series).
If you wish to connect more than 12 alarms, contact your local helpline.
WARNING: Do not connect these Alarms to any other type of Ei Alarm (apart from those
listed above) or to any other model produced by another manufacturer. Doing so may damage
the Alarms and could result in a shock or fire hazard.
Systems using more than 3 or 4 Alarms must be very carefully planned to ensure nuisance alarms are
not excessive. e.g. from cooking fumes or steam. The following is suggested:
• In an RF system an Ei Electronics Control Switch (Ei450) should be incorporated and be readily
accessible to all occupants so that the source of an alarm can be quickly identified. This is especially
important when both Fire and CO Alarms are used in the same system as the occupant will need to
open all windows and doors if it is a CO incident but do the opposite to slow down a fire.
• All Alarms must be cleaned and maintained regularly.
• A qualified person must be on call to quickly remove any nuisance Alarms (i.e. Alarm with red LED
alarm indicator flashing rapidly) which are causing all the other Alarms to sound.
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