Newentor CO2 Monitor, Carbon Dioxide Detector, Large Display CO2 Meter with Voice Alert, Indoor Air Quality Monitor… Price: 59.99 (as of 10/04/2023 21:46 PST- Details)

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🏕️ [High-precision CO2 Sensor]: The CO2 detection adopts the most advanced sensor of Swiss Sensirion’s unique PASens technology, and adopts the photoacoustic detection principle to perform accurate and reliable measurements in a wide range of concentration areas and applications.
🔔 [Carbon Dioxide Concentration Alerts]: The CO2 concentration alert value can be customized to make our life, work or production environment safer.