Air Quality Monitor Indoor, 5-in-1 CO2 Detector, CO2 Monitor Accurate for CO/ CO2/ HCHO/TVOC/AQI, Manual Calibration… Price: 45.99 (as of 08/04/2023 22:30 PST- Details)

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【Health Assistant CO2 Detector CO2 Monitor】The built-in high-precision sensor of the CO2 monitor can quickly, accurately and efficiently measure the gas content of carbon monoxide (CO), carbon dioxide (CO2), formaldehyde (HCHO), and volatile organic compounds (TVOC) in indoor and outdoor air whether it exceeds the standard. It can effectively protect human health for a long time, while preventing and controlling indoor air pollution.
【Instant Reading CO2 Detector】After two minutes of preheat, the HD LED screen shows clearly the real time CO, CO2, HCHO, TVOC, AQI of five indicators. Please refer to table for air quality pollution level, you can know more about your air. When the power is green, it means the battery is fully charged; orange means the battery is half charged; red means the battery is low (please charge it in time).