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FIRST OF ITS KIND: The first battery-operated, digital radon detector. Monitor your home without the need for an outlet. LONG TERM MONITORING: Monitor

Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

Airthings Battery Operated Digital Radon Detector 2350 - The Home Depot