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Scondaor Professional CO2 Detector with Temperature and Humidity, Indoor Air Quality Monitor - Crondall Weather
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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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Scondaor CO2 Detector Meter, Indoor Air Quality CO2 Monitor with NDIR Sensor 400-5000 PPM, Desktop and Portable Carbon Dioxide Detector Monitor with Temperature and Humidity Gauge Meter : Amazon.co.uk: DIY & Tools
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