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NEVER IGNORE THE ALARM
Pre-Alarm: When the alarm detects over 50ppm CO the red light flashes every 2 seconds. This helps
locate CO leaks as the unit gives an indication straight away (without this feature the CO level would need
to be at 50ppm CO for 90 minutes for the horn to sound). Note the Pre-Alarm signal may be triggered by
CO coming for example, from cooking with gas, from car engines or from nearby barbecues. This is
usually not a concern unless the Pre-Alarm signal persists until the alarm sounds and the CO source is
unknown.
Note: The CO Alarm may sound if cigarette smoke is blown into it, or aerosols are released nearby.
2.4 CO ALARM MEMORY
When the Test button is pressed the horn will sound, and the red light will only flash if the unit has
previously detected CO and been in alarm. The flash rate indicates the level of CO detected as below:-
- Red light is Off – No CO detected since reset or power up.
- Red light flashes 2 times (in 2 seconds) every 40 seconds - 50 ppm CO detected for approximately
90 minutes since reset or power-up.
- Red light flashes 4 times (in 2 seconds) every 40 seconds - 100 ppm CO detected for approximately
40 minutes since reset or power-up.
- Red light flashes 8 times (in 2 seconds) every 40 seconds - 300 ppm CO detected for approximately
3 minutes.
When the Test button is held, the digital display on the Ei261DENRC model shows the previous peak
reading. This tells you if the unit has detected CO in your absence and helps to detect and locate leaks,
monitor premises etc.
Reset Memory by holding down the Test button for over 20 seconds until the red light stops flashing.
Cover the horn with a cloth to muffle the alarm during this time.
Please note that the memory will also be reset when the unit is removed from the mounting plate.
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