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Corentium Home Radon Detector by Airthings 224 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, International Version, Bq/m³: Amazon.com: Tools & Home Improvement
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Airthings Corentium PRO Battery-Operated Continuous Radon Monitor (CRM), NRPP/NRSB Certified 2700 - The Home Depot
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