{"product_id":"gravity-analog-electrochemical-co2-sensor-0-10000-ppm","title":"Gravity: Analog Electrochemical CO2 Sensor (0-10000 ppm)","description":"\u003cp\u003eThe Gravity: Analog Electrochemical CO2 Sensor is a module designed for detecting high concentrations of carbon dioxide and triggering an automated response. Based on the proven MG-811 sensor core, its primary function is to act as a simple, threshold-based switch. An onboard potentiometer allows for the manual setting of a specific CO₂ concentration level. When the ambient CO₂ exceeds this preset point, the sensor provides a clear digital signal, making it straightforward to implement event-driven systems like safety alarms or ventilation controls. With a wide detection range of up to 10,000 ppm, it is well-suited for monitoring environments where CO₂ can accumulate to significant levels, such as fermentation chambers or mushroom cultivation tents.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSimple Threshold Alarm for High-CO₂ Events\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe CO2 detection module's core feature is its function as a simple comparator. By adjusting the onboard potentiometer, a user can define the exact CO₂ level that triggers an alert. When this threshold is crossed, the digital output (DO) pin changes state, providing an unambiguous \"go\/no-go\" signal. This allows for the creation of simple logic-based systems (e.g., IF CO₂ level is high, THEN activate relay) without needing complex code to interpret analog data.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWide Detection Range for Specialized Environments\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eEngineered to perform in environments far beyond typical room air, this sensor can detect CO₂ concentrations up to 10,000 ppm. This capability makes it a practical tool for specific applications where high CO₂ is a key process variable. It enables reliable monitoring for projects such as triggering ventilation in a mushroom farm, creating a safety alert for wine or beer fermentation vessels, or monitoring small-scale bioreactors.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFlexible Dual Analog \u0026amp; Digital Outputs\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe CO₂ detection sensor provides both analog and digital outputs for enhanced flexibility.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDigital Output: Ideal for simple, immediate alarm systems. This signal can directly drive a relay, buzzer, or indicator LED, serving as a reliable trigger.\u003c\/li\u003e\n\u003cli\u003eAnalog Output: For more advanced applications, the analog output provides a voltage that correlates to the CO₂ concentration. This allows for data logging to observe trends over time. Note that electrochemical sensors require a stable temperature and humidity environment for best results and are better suited for observing relative changes rather than providing precise, calibrated ppm measurements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eChoosing the Right CO₂ Sensor?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eWith different technologies like NDIR, Electrochemical, and Photoacoustic, selecting the perfect sensor can be complex. The comprehensive guide breaks down the key differences and recommends the best sensor for 5 common project scenarios.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/blog-1487.html\" target=\"_blank\"\u003e\u003cstrong\u003e» Read the Full 2025 CO₂ Sensor Selection Guide\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv id=\"Applications\" class=\"content Applications\"\u003e\n\u003ch4\u003eApplications:\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eFermentation Process Control: Monitor CO2 levels in brewing or other fermentation processes to trigger ventilation when concentrations become too high.\u003c\/li\u003e\n\u003cli\u003eMushroom Cultivation: Ensure optimal growing conditions by alerting when CO2 levels exceed the desired threshold.\u003c\/li\u003e\n\u003cli\u003eBasic Air Quality Alerts: A simple solution to detect poor ventilation in enclosed spaces like garages or basements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb data-v-1ff015f2=\"\"\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eLarge Range\u003c\/li\u003e\n\u003cli\u003eAdjustable Alarm Threshold\u003c\/li\u003e\n\u003cli\u003eFast Response\u003c\/li\u003e\n\u003cli\u003eAnalog Output\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Specification\" class=\"content Specification\"\u003e\n\u003ch4\u003eSpecifications:\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: \u003cspan\u003e3.7～5V\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput:\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGravity: Analog (Analog2.7～4.1V) + 3P Header \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDigital Output(Alarm):0～VCC Level\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eInterface: Gravity Analog\u003c\/li\u003e\n\u003cli\u003eMeasurement Principle: \u003cspan\u003eElectrochemistry (Solid electrolyte battery principle)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eMeasurement Range: \u003cspan\u003e0～10000 ppm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv data-v-1ff015f2=\"\" class=\"cell product-table-head\"\u003eResponse Time: \u003cspan\u003e\u0026lt;20s\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003eAverage Power: \u003cspan\u003e\u0026lt;1W\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eOnboard Circuitry: Heating Circuit, Signal Amplifier\u003c\/li\u003e\n\u003cli\u003ePCB Process: Immersion Gold\u003c\/li\u003e\n\u003cli\u003eOperation Temperature: \u003cspan\u003e-20℃～50℃\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperation Humidity: \u003cspan\u003e0～95% RH (No condensation)\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: 32x42mm (1.26x1.65\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Documents\" class=\"content documents\"\u003e\n\u003ch4\u003eDocuments\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0159\/\" target=\"_blank\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":41623341269125,"sku":"SN-000236-DFR","price":54.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/5819\/0725\/files\/3_02697125-6906-42a6-ada7-54d1266be6cb.png?v=1778235311","url":"https:\/\/robotpishop.com\/products\/gravity-analog-electrochemical-co2-sensor-0-10000-ppm","provider":"Robot Pi Shop","version":"1.0","type":"link"}