With increasing public concern about indoor air quality (IAQ), carbon dioxide (CO₂) sensors have moved from industrial equipment into smart homes, building automation systems, and ventilation systems, becoming a core component in measuring air quality. CO₂ concentration represents more than just a number; it directly impacts our comfort, work efficiency, and even long-term health.
Various countries have established clear guidelines for indoor CO₂ concentrations. my country's "Indoor Air Quality Standard" stipulates that the daily average indoor CO₂ concentration should not exceed 1000 ppm (0.1%), consistent with the World Health Organization's recommendations. Exceeding this limit can cause discomfort; as the concentration continues to rise, blood oxygen saturation decreases, leading to drowsiness, headaches, fatigue, significantly reduced work and study efficiency, and impaired sleep quality.
♻️ Quick Overview of Concentration Levels
500–800 ppm: Low concentration, essentially harmless.
Above 1000 ppm: Drowsiness and difficulty concentrating.
1500–3000 ppm: Multiple studies confirm a significant decline in decision-making ability (see details below).
Above 2500 ppm: Increased drowsiness and reduced sleep efficiency.
Above 8000 ppm: Severe hypoxia, risk of coma and even death.
Empirical Research: The Relationship Between CO2 Concentration and Sleep Quality
♻️This shows that carbon dioxide is very harmful to the human body, and indoor carbon dioxide concentration will definitely be higher in people. To be aware of the harm of carbon dioxide to the human body, you can cover your head with a blanket before going to bed at night: within a minute, you will definitely feel uncomfortable. The biggest reason for this discomfort is not because there is less air, but because the carbon dioxide concentration has reached a dangerous level.
⭕Short-term exposure to excessively high carbon dioxide concentrations will not have a significant impact on our bodies. However, if we live and work in an environment with excessively high carbon dioxide levels for a long time, it will cause great harm to the human body.
⭕Many employees spend long periods of time in poorly ventilated offices; after returning home, due to outdoor pollution and noise, we are forced to stay in poorly ventilated rooms.
⭕In the cold winter, we close doors and windows, creating a closed environment that blocks cold outdoor air from entering. With each breath of oxygen we inhale and exhale carbon dioxide produced by our bodies, the oxygen in the room doesn't replenish, while the carbon dioxide concentration increases. At this time, we don't want to open windows for ventilation because opening them would allow cold air, smog, and outdoor noise to enter. In summer, because we often use air conditioning, we also don't want to open windows for ventilation. While the indoor air becomes cooler, no fresh air enters, and the carbon dioxide concentration continues to rise. As a result, many people are in a state of oxygen deficiency at home and in the office, which can be very harmful to their health in the long run.
⭕Children are most vulnerable to the harmful effects of carbon dioxide: their bodies are more fragile, and because carbon dioxide is 1.5 times heavier than air, the CO2 concentration is higher closer to the ground. Pregnant women are also affected by carbon dioxide because they also spend long periods indoors.
✅LSENLTY's plug-in 3-in-1 CO2 monitor simultaneously provides CO2, temperature, and humidity readings. This CO2 detector supports 110V to 220V AC power and is suitable for various locations, including bedrooms, RVs, greenhouses, basements, hotel rooms, and offices.
🎯 Utilizes a high-precision CO2 sensor that refreshes readings every 2 seconds, increasing sensitivity, providing rapid dynamic response, and accurate measurements. CO2 accuracy is ±5% (detection range: 400 to 5000 ppm); temperature accuracy is ±1.5°C (detection range: -10°C to 50°C); humidity accuracy is ±5%RH (detection range: 5% to 95%RH).
🎯 By default, the product will automatically sound an alarm when the CO2 concentration exceeds 1500 ppm. This plug-in CO2 concentration meter can be configured with different alarm ranges to suit different user needs. You will receive an immediate alarm when the carbon dioxide concentration exceeds the set range, allowing you to easily track carbon dioxide levels in bedrooms, nursing rooms, wine cellars, basements, nurseries, and other locations.
🎯 This CO2 concentration meter features an updated alarm system. Traditional meters continuously emit an alarm that cannot be turned off when the CO2 concentration exceeds the alarm value; this device's upgraded alarm system is more intelligent. A short press of the "ring" button will silence the buzzer, regardless of the CO2 reading.
🎯 The insertable CO2 meter can be manually calibrated. Place the device in a well-ventilated environment and press and hold the left "☀" button for 5 seconds to enter a 200-second manual calibration mode. After calibration, the screen will display "Calibrated √".
(Please note: During CO2 calibration, the device must be placed in a well-ventilated area, and no one should be near it to avoid interfering with the calibration results.)
Adjusting air supply based on actual occupancy rather than a fixed schedule—this intelligent ventilation method achieves significant energy savings and environmental protection while maintaining good air quality.