CO2 Detector Monitor, 3 in 1 Carbon Dioxide Detector Air Quality Monitor, Indoor CO2 Detector with Real-Time Touch… Price: 65.99 (as of 08/04/2023 22:30 PST- Details)

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[3 in 1 Multifunctional Monitor] The smart air quality monitor accurately detects current carbon dioxide concentrations, temperature and humidity in the air. Easy to measure 3 important indicators of indoor air quality, comprehensive understanding of air quality, to protect your health.
[High-Precision CO2 Sensor] CO2 detector built-in high-precision CO2 infrared sensor, high measurement accuracy, fast response, real-time monitoring of the CO2 concentration around you, the measurement range of 400-5000 PMM. When the co2 concentration detected exceeds the safe value, it will remind you to increase the ventilation of the outdoor air to reduce the co2 level of the indoor space and ensure safety.