Ei Electronics Ei207 Series Instruction Manual page 31

Low Battery fault
When the battery is starting to be depleted the CO Alarm will beep and the yellow LED will
flash about every 48 seconds.
For the Ei208 Models, the entire CO Alarm will have to be replaced as it has a built in
battery.
For the Ei207 models, replace the batteries as follows:
Check the 'Replace by' label on the side wall - if it
has been exceeded replace the entire CO Alarm. If
the Replace by' label on the side wall has not been
exceeded, remove the Alarm from the mounting plate,
remove the battery cover (see figure 8) and replace
the batteries. Use only the following Alkaline AAA size
batteries: Duracell, Panasonic, or Energizer.
Insert the new batteries with the orientation shown
on the base. Replace the battery cover and replace
Fig.8
the Alarm back on its mounting plate (this action
automatically switches on the batteries). Button test
the Alarm (after 15 seconds) to check the batteries are
installed correctly and that they are not depleted.
The batteries in the Ei207 series should be replaced before the "best before" date printed
on the batteries is exceeded. (The batteries will usually last over 5 years in standby under
normal conditions. The life will be reduced if the unit regularly goes into alarm or if it is
exposed to excessive temperatures for long periods).
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