Photo 1 of Airthings 2930 Wave Plus - Radon & Air Quality Monitor (CO2, VOC, Humidity, Temp, Pressure) 20 x 30 x 1-- Needs new batteries

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Photo 1 of Airthings 2930 Wave Plus - Radon & Air Quality Monitor (CO2, VOC, Humidity, Temp, Pressure) 20 x 30 x 1-- Needs new batteries Photo 2 of Airthings 2930 Wave Plus - Radon & Air Quality Monitor (CO2, VOC, Humidity, Temp, Pressure) 20 x 30 x 1-- Needs new batteries Photo 3 of Airthings 2930 Wave Plus - Radon & Air Quality Monitor (CO2, VOC, Humidity, Temp, Pressure) 20 x 30 x 1-- Needs new batteries