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Mile End Business Park, Oswestry, Shropshire SY10 8NN 

Tel. 0870 758 4000           Fax.  0870 758 4010        www.aico.co.uk 

&

 OE Our policy is one of continuous improvement.                                                                 Ei205ENA DataSht Rev 0 29.03.10

 

We reserve the right to amend designs and specifications without prior notice.

        

 

Product Description 

 

The Ei205ENA is a Carbon Monoxide (CO) Alarm that runs on 
battery power. It has a sealed in tamper proof batteries  
designed to last 5 years (the life of the alarm). 
 
The alarm has a high performance electrochemical sensor to 
sense CO presence. 
 
The alarm has an integrated pattress and screws for easy wall or 
ceiling mounting. 
 
 
 
 
 
 

Operation 

 



The green light will flash once every 40 seconds to show 
power is present. 

 



The alarm will sound and the red indicator will flash at  

different speeds to indicate the presence of various levels of 

CO gas (see overleaf). 

 



The alarm will beep every 40 seconds to indicate the  

    battery is depleted and the unit needs replacing. 
 



The alarm will beep and the amber indicator will flash every 
40 seconds to indicate a fault on the sensor. 

 



The ‘Test/Hush’ button will either silence false alarms (if 

briefly pressed) or perform a unit self test (if pressed and 

held). Note that the alarm cannot be silenced when sensing a 
CO level of 300ppm or above. 

 



Memory Feature—after the unit as been in alarm, the red 
indicator will flash every 40 seconds at a rate indicating the 
CO level previously detected. 

Battery Powered 

Carbon Monoxide Alarm 



Proven Electrochemical sensor 



Tamper Proof battery cover 



Memory feature records if Carbon Monoxide (CO) has been 
detected 

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Easy to use Test/Hush button 

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Pre alarm LED gives early warning of CO 



Advanced suppression and calibration technology 

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Low power cell warning  

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Loud distinctive alarm sound (85db (A) at 3 metres) 

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Power, alarm and fault indicator lights 

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Kitemarked to BS EN50291:2001 



5 Year Guarantee 

Model 

Ei205ENA

 

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