Ei Electronics Carbon Monoxide Alarm Ei 205ENA - Manual (Page 26)

(9) Leaving windows or doors slightly open (even a few inches) will significantly reduce
the risk of high levels of CO occurring. The high levels of draught-proofing in
modern houses reduces ventilation and can allow dangerous gases to build up.
(10) Install CO Alarms in all the areas recommended in this leaflet.
(11) Recognise that CO poisoning may be the cause when family members suffer from
“flu-like” symptoms when at home but feel better when they are away for extended
periods.
10. TECHNICAL SPECIFICATION
Power : Three Alkaline AA type batteries (supplied)
CO Sensitivity : Meets BS EN 50291: 2001.
Unit operates as per Table B (on page 8).
Electromagnetic : Complies with BS EN 50270
Compatibility
Test/Hush Button : Checks electronics and horn.
When the unit is alarming, after sensing CO, pressing the test/hush button
will immediately stop the horn (the red light will continue to flash). If CO is
still present the red light and the horn will turn on again after about 4
minutes. The unit can only be silenced once during a CO incident. At 300
ppm CO the unit cannot be silenced. (With interconnected units, the hush
only works on the alarm sensing CO).
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