Aico's Best Selling EI261ENRC Mains 240 volt powered Carbon Monoxide CO Gas Alarm with 10 year Rechargeable Lithium Back-up. Memory feature shows last recorded CO level. Replaceable sensor module increases the alarm life from 5 to 10 years alarm life. 5 Year Guarantee. Third Party Accredited by BSI BS EN 50291:2001 KM 86596
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