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![](https://ae01.alicdn.com/kf/S92ce019d28ce462fa54184f5e2fbcd23e/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) ![](https://ae01.alicdn.com/kf/Sb7786e04cd074886ad5d0fbc7981d2caJ/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) ![](https://ae01.alicdn.com/kf/See19a25cc8a74ee9933101331a09e58ep/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) ![](https://ae01.alicdn.com/kf/S5631f66f04514ff8ab0f4eada9ed0545G/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) aHR0cDovL2ZyZWVzaGlwLmNvLmty![](https://ae01.alicdn.com/kf/S92ce019d28ce462fa54184f5e2fbcd23e/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) ![](https://ae01.alicdn.com/kf/Sb7786e04cd074886ad5d0fbc7981d2caJ/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) ![](https://ae01.alicdn.com/kf/See19a25cc8a74ee9933101331a09e58ep/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) ![](https://ae01.alicdn.com/kf/S5631f66f04514ff8ab0f4eada9ed0545G/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg) ![](https://ae01.alicdn.com/kf/S0f7747fe182b4093bc835c810b8494c6i/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg)
- ºê·£µå À̸§: ARZEMS
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¿É¼ÇÁ¤º¸[(29)Semiconductor white] [(496)Semiconductor Black] [(200021498)Infrared white] [(200025551)Infrared Black]![](https://ae01.alicdn.com/kf/Sae08f035316343e2856600831f9916f8Y/Air-Quality-Monitor-3-in-1-CO2-Moisture-Meter-Pollution-Meter-Sensor-Tester-Detect-Test-Indoor.jpg_640x640.jpg) product description: 1. Carbon dioxide detector semiconductor model: The smart carbon dioxide value tester gas analyzer uses a semiconductor TVOC sensor to convert the carbon dioxide concentration, with stable performance, low consumption and long service life. Accurate detection of carbon dioxide. The large screen displays electricity, CO2, temperature and humidity. The disadvantage is that the semiconductor sensor is very sensitive to organic gases, especially active organic gases such as alcohol, formaldehyde, vinegar, and oil fume, and is easily affected by this, causing the display to change. 2. Carbon dioxide detector infrared model: The infrared carbon dioxide gas sensor utilizes the absorption of characteristic infrared wavelengths by carbon dioxide gas in accordance with the Lambert-Beer law. The basic principle is that the infrared light source emits an infrared beam through the sampling chamber, and uses the carbon dioxide gas component to absorb infrared rays of a specific frequency. Compared with electrochemical, catalytic combustion, solid electrolyte, semiconductor, and photoacoustic methods, the NDIR detection method has the following advantages: Good selectivity, less susceptible to poisoning and aging due to harmful gases, fast response, good stability, and high signal-to-noise ratio. ![](https://ae01.alicdn.com/kf/Sfee002ef06c3435d9280e604d1cefcc87.jpg) ![](https://ae01.alicdn.com/kf/Sde4aff2e9bc541298d2b78c4cbe8831a6.jpg) ![](https://ae01.alicdn.com/kf/S9bfca83a0fae4fa19acc84bfe06b58fcL.jpg) ![](https://ae01.alicdn.com/kf/Sd671c5e1f6b743a2948022dfc2a5ee02j.jpg) ![](https://ae01.alicdn.com/kf/S7847f92c06ce4816b53a35d786f5c1e5F.jpg) ![](https://ae01.alicdn.com/kf/Se3156311fa964b709f956b733195d6f4A.jpg) ![](https://ae01.alicdn.com/kf/S1de7ecaa6ebd4c7cb3bc01a355c236303.jpg) ![](https://ae01.alicdn.com/kf/S1d0d284a885846b880482a2308df4b15J.jpg)
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