The Ei105B is an Optical Smoke Alarm that runs on a 9V
battery (supplied with the alarm).
Optical smoke alarms use the light scatter principle to
detect smoke particles entering the optical chamber
within the alarm.
Optical sensing technology gives a rapid response to
visible smouldering fires.
The Ei105B is easily installed and comes supplied with
all necessary screw fixings.
The Ei105B is fitted with a warning flag that pops up
when the battery is removed. This prevents the cover
from closing when there is no battery fitted to the unit.
When the battery is being installed or changed, this flag
must be held down while gently pushing the battery into
the battery holder.
When the battery is first connected, the alarm may sound
for 2-3 seconds – this is normal and means that the
battery is connected correctly