{"product_id":"mg811-co2-carbon-dioxide-gas-sensor-module","title":"MG811 CO2 Carbon Dioxide Gas Sensor Module","description":"\u003cdiv class=\"product_info\"\u003e\n\u003ch2 class=\"sing--sub-heading\"\u003e\u003cspan style=\"font-size: 18.72px;\"\u003eMG-811 Carbon Dioxide (CO₂) Gas Sensor Module\u003c\/span\u003e\u003c\/h2\u003e\nThe \u003cstrong\u003eMG-811 Carbon Dioxide Sensor Module\u003c\/strong\u003e is designed for accurate detection of \u003cstrong\u003ecarbon dioxide (CO₂)\u003c\/strong\u003e concentration with a wide sensing range and stable performance. This sensor works on the principle of \u003cstrong\u003einfrared (IR) absorption\u003c\/strong\u003e, where CO₂ molecules absorb specific wavelengths of infrared radiation, enabling reliable gas concentration measurement. \u003cbr\u003e\u003cbr\u003eThe MG-811 module integrates the \u003cstrong\u003eMG-811 metal oxide gas sensor\u003c\/strong\u003e along with an onboard heating and signal conditioning circuit. It offers high sensitivity to CO₂ while being less sensitive to alcohol and carbon monoxide. As the CO₂ concentration increases, the \u003cstrong\u003eanalog output voltage decreases\u003c\/strong\u003e. \u003cbr\u003e\u003cbr\u003eThe module also features a \u003cstrong\u003eTTL digital output\u003c\/strong\u003e with an adjustable threshold using the onboard potentiometer. When the set CO₂ level is reached, the indicator LED turns ON and the digital output goes HIGH. This sensor is widely used in air quality monitoring, greenhouses, medical devices, and environmental control systems.\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eFeatures\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eWide CO₂ detection range up to 10,000 ppm\u003c\/li\u003e\n\u003cli\u003eHigh sensitivity and stable performance\u003c\/li\u003e\n\u003cli\u003eMetal Oxide Sensor (MOS) based CO₂ detection\u003c\/li\u003e\n\u003cli\u003eBuilt-in heater and signal output circuit\u003c\/li\u003e\n\u003cli\u003eAnalog output voltage decreases as CO₂ concentration increases\u003c\/li\u003e\n\u003cli\u003eDigital TTL output with adjustable threshold\u003c\/li\u003e\n\u003cli\u003eIndicator LED for digital output status\u003c\/li\u003e\n\u003cli\u003eSimple drive circuit\u003c\/li\u003e\n\u003cli\u003eCompatible with Arduino and Raspberry Pi (ADC required)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePinout\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eVCC: 6 V DC power supply (recommended via 4 × AA battery holder)\u003c\/li\u003e\n\u003cli\u003eAOUT: Analog output (voltage decreases as CO₂ concentration increases)\u003c\/li\u003e\n\u003cli\u003eDOUT: Digital output (goes HIGH when threshold is reached)\u003c\/li\u003e\n\u003cli\u003eGND: Ground (0 V)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eTechnical Details\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eItem Type: CO₂ Sensor\u003c\/li\u003e\n\u003cli\u003eModel No.: MG-811\u003c\/li\u003e\n\u003cli\u003eSensor Type: Metal Oxide Sensor (MOS)\u003c\/li\u003e\n\u003cli\u003eDetection Gas: Carbon Dioxide (CO₂)\u003c\/li\u003e\n\u003cli\u003eDetection Range: 0 – 10,000 ppm\u003c\/li\u003e\n\u003cli\u003eOperating Voltage: 6 V DC\u003c\/li\u003e\n\u003cli\u003eAnalog Output Range: 0–2 V or 0–4 V (default: 0–2 V)\u003c\/li\u003e\n\u003cli\u003eDigital Output: TTL level\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eApplications\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eIndoor air quality monitoring\u003c\/li\u003e\n\u003cli\u003eGreenhouse and horticulture control systems\u003c\/li\u003e\n\u003cli\u003eMedical and healthcare monitoring equipment\u003c\/li\u003e\n\u003cli\u003eEnvironmental monitoring systems\u003c\/li\u003e\n\u003cli\u003eIndustrial and process control applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003cdiv class=\"product_info\" style=\"text-align: center;\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eConnection Diagram with Arduino and LCD Display:\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/connections_diagram.jpg?v=1766122930\" alt=\"diagram\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePhysical Attributes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eLength: 32 mm\u003c\/li\u003e\n\u003cli\u003eWidth: 22 mm\u003c\/li\u003e\n\u003cli\u003eHeight: 29 mm\u003c\/li\u003e\n\u003cli\u003eWeight: 10 g\u003c\/li\u003e\n\u003cli\u003eCompact PCB-mounted CO₂ sensor module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePackage Includes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds ls-n\"\u003e\n\u003cli\u003e1 × MG-811 Carbon Dioxide (CO₂) Gas Sensor Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"Default Title","offer_id":48615335821564,"sku":"KG1330","price":2498.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/1_4086fa82-d650-423b-aa95-b29b94e2aeca.jpg?v=1767611351","url":"https:\/\/kitsguru.com\/products\/mg811-co2-carbon-dioxide-gas-sensor-module","provider":"KitsGuru","version":"1.0","type":"link"}