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2. Alarm levels as defined by European Norm EN50291-2010*
The table below shows the response 4mes at which your CO alarm will sound:
CO Advice and Informa/on
The table below shows the physiological effects of exposure to increasing concentra4ons of CO:
Parts per Million (PPM) of CO
Time un/l Alarm
50
60 – 90 minutes
100
10 – 40 minutes
300
Must alarm in less than 3 minutes
Parts per Million (PPM)
Effects on Adults
100
Slight headache, nausea, fa4gue (flu-like symptoms)
200
Dizziness and headache within 2 – 3 hours
400
Nausea, frontal headache, drowsiness, confusion and rapid heart rate.
Risk to life a%er over 3 hours of exposure
800
Severe headaches, convulsions, vital organ failures. Death possible within
2 – 3 hours
* EN50291-2010 is a European Standard for "Electrical apparatus for the detec4on of carbon monoxide in domes4c premises - Part 1: Test
methods and performance requirements"
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