Airthings will donate $1 for each Corentium Home sold on Amazon.com through January 31, 2019, to the American Lung Associations LUNG FORCE initiative to support lung cancer research.The American Lung Association does not endorse any product, device or service.Battery operated with a 2-year battery lifeUnaffected by electromagnetic interference and dust, performs optimally in humidity < 85%Designed in Europe and tested in Japan, Germany, France & USA
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