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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
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GZAIR SA103 Portable Carbon Monoxide Gas CO Detector for Home & Industry Safety, Traveling Tent, Stove Heating, Vehicles and Other confined Spaces : Amazon.co.uk: DIY & Tools
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