HOMELYLIFE Carbon Monoxide Detector, Replaceable Battery Operated Carbon Monoxide Alarm with LCD Digital Display, EN 50291 CO Alarms Monitor for Home Safety (AA Battery NOT Included) : Amazon.co.uk: DIY & Tools
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AJ-938 Standalone Smoke and Carbon Monoxide Alarm with 10-Year Tamper-Proof Battery - SAFE-TECH - A British Brand Specialising in Home and Safety Protection
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