{"product_id":"gravity-pwm-ndir-infrared-carbon-dioxide-co2-sensor-400-5000-ppm","title":"Gravity: PWM NDIR Infrared Carbon Dioxide \/ CO2 Sensor (400-5000 ppm)","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThe Gravity: PWM Infrared CO2 Sensor is a high-precision module engineered for quantitative measurement of carbon dioxide. It operates on the principle of Non-Dispersive Infrared (NDIR) technology to deliver stable, selective, and accurate data. The sensor's key features—high accuracy, exceptional stability, and a long service life—are backed by concrete performance metrics. With a standard indoor air quality detection range of \u003cb\u003e400 to 5000 ppm\u003c\/b\u003e and a fine \u003cb\u003eresolution of 1 ppm\u003c\/b\u003e, it is the definitive choice for data-driven applications such as IAQ monitoring, smart HVAC systems, and scientific research.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHigh-Accuracy NDIR Technology\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis CO2 Sensor provides precise, quantitative readings, not just estimates. The NDIR technology targets the specific absorption wavelength of CO2, ensuring high selectivity. This performance is quantified by its specifications: an accuracy of ±(50ppm + 5% of reading) and a resolution of 1 ppm. The data is reliably transmitted via a PWM output signal, providing trustworthy data for analysis and control systems.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eExceptional Long-Term Stability \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for continuous and reliable monitoring, this NDIR CO2 sensor maintains its performance across a wide range of real-world conditions. It operates consistently in temperatures from -10℃ to 50℃ and in humidity levels up to 95% RH (non-condensing). Featuring built-in temperature compensation and a swift \u003cb\u003eresponse time (T90 \u0026lt; 120s)\u003c\/b\u003e, it exhibits minimal signal drift, reducing the need for frequent recalibration in long-term, unattended deployments.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eExtended 5-Year Service Life \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe robust NDIR sensor element is engineered for longevity, contributing to a service life of up to five years under normal operating conditions. This reliability is supported by an efficient electronic design, with an average current draw of just 40mA at 5V. This extended lifespan offers a lower total cost of ownership and greater peace of mind for permanent installations like smart home devices or building automation systems.\u003c\/p\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\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIndoor Air Quality (IAQ) Monitoring: Build a device to accurately track CO2 levels in homes, offices, or classrooms to manage ventilation and improve health and productivity.\u003c\/li\u003e\n\u003cli\u003eSmart Home \u0026amp; HVAC Systems: Integrate with HVAC systems to automatically introduce fresh air when CO2 levels rise, creating a smarter and more efficient climate control system.\u003c\/li\u003e\n\u003cli\u003eScientific \u0026amp; Agricultural Tech: Use in labs, greenhouses, or other controlled environments where precise CO2 concentration data is crucial for research or optimizing plant growth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDetection Gas: Carbon Dioxide (CO2)\u003c\/li\u003e\n\u003cli\u003ePower Supply: 5.0±0.1V DC\u003c\/li\u003e\n\u003cli\u003eAverage Current: 40mA@5V\u003c\/li\u003e\n\u003cli\u003eOutput Signal: PWM\u003c\/li\u003e\n\u003cli\u003eDetection Range: 400～5000 ppm\u003c\/li\u003e\n\u003cli\u003eResolution: 1ppm\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±(50ppm+5% rdg)\u003c\/li\u003e\n\u003cli\u003eResponse Time: T90 \u0026lt; 120s\u003c\/li\u003e\n\u003cli\u003eWorking Temperature: -10℃～50℃\u003c\/li\u003e\n\u003cli\u003eWorking Humidity: 0～95%RH (non-condensing)\u003c\/li\u003e\n\u003cli\u003eDimensions: 69×37mm \/ 2.72×1.46\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGravity: PWM Infrared CO2 Sensor (400-5000 ppm) x1\u003c\/li\u003e\n\u003cli\u003eDigital Sensor Cable for Arduino x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0219\/\" target=\"_blank\"\u003eProduct Wiki\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":67580545466445,"sku":"E34019-001","price":114.2,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34019-win1.jpg?v=1791322196","url":"https:\/\/www.mlab.com.au\/products\/gravity-pwm-ndir-infrared-carbon-dioxide-co2-sensor-400-5000-ppm","provider":"MLAB","version":"1.0","type":"link"}