Motteru Mini CO2 Detector with Alarm – Air Quality Monitor, Carbon Dioxide Detector Battery Powered with LED Digital… Price: 39.99 (as of 01/12/2022 09:46 PST- Details)

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Advanced, innovative wireless air quality monitor indoor with a high-precision smart chip
This home air quality tester uses the NDIR CO2 sensor. Quickly test the indoor carbon dioxide levels