Mains Powered Combined Heat and Carbon Monoxide Alarm with Self-Charging 10 Year Back-up Battery - Aico Ei3028 - £80.87 inc VAT
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Scondaor Carbon Monoxide Alarm Detector with 10-Year Sensor, Digital Display CO Alarm Detector with Alarm Record, Battery Operated (3 AA Batteries Included), EN 50291 Certified : Amazon.co.uk: DIY & Tools
What Does a Carbon Monoxide Detector Do and How Does it Work? | SafeWise