{"product_id":"gravity-i2c-scd41-infrared-carbon-dioxide-co2-sensor-400-5000-ppm","title":"Gravity: I2C SCD41 Infrared Carbon Dioxide \/ CO2 Sensor (400 - 5000 ppm)","description":"\u003cp\u003eCO2 is a key factor for indoor air quality as high levels compromise human cognitive performance and well-being.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThis Gravity: SCD41 CO2 sensor is based on the SCD41 miniature CO2 sensor from Sensirion.\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eSCD41 builds on the photoacoustic NDIR sensing principle and Sensirion’s patented PAsens® and CMOSens® technology to offer high accuracy at an unmatched price and the smallest form factor. On-chip signal compensation is realized with the built-in temperature and humidity sensor, while temperature and humidity data outputs are also available.\u003c\/p\u003e\n\u003cp\u003eSCD41 sensor detects the amount of energy that is absorbed by CO2 molecules. When pulsing the infrared emitter, CO2 molecules absorb infrared light periodically. This causes additional molecular vibration resulting in a pressure wave inside the measurement chamber. The higher the CO2 concentration, the more light is absorbed, and thus the greater the amplitude of this acoustic wave becomes. A microphone inside the gas chamber measures this, from which the CO2 concentration can then be calculated.\u003c\/p\u003e\n\u003cp\u003eClick to learn more about\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/sensirion.com\/products\/technology\/\" target=\"_blank\"\u003ePAsens® technology\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eClick to learn more about\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/img.dfrobot.com.cn\/wiki\/5d57611a3416442fa39bffca\/477b737333d4d828abac9323e8bf1eb2.pdf\" target=\"_blank\"\u003eNDIR sensors\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/cache3\/data\/SEN0536\/1_0x0.jpg.webp\" alt=\"Gravity: SCD41 Infrared CO2 Sensor - I2C\" title=\"Gravity: SCD41 Infrared CO2 Sensor - I2C\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eFeatures:\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCO2, temperature, and humidity, three in one\u003c\/li\u003e\n\u003cli\u003eSmall size of 32*27*8mm\u003c\/li\u003e\n\u003cli\u003eLow power, average current＜4mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eApplications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIndoor CO2 concentration monitoring\u003c\/li\u003e\n\u003cli\u003eAmbient monitoring in greenhouse\u003c\/li\u003e\n\u003cli\u003eSmart ventilation systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecification:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply: 3.3V to 5V\u003c\/li\u003e\n\u003cli\u003eAverage Operating Current: ＜4mA\u003c\/li\u003e\n\u003cli\u003eI2C Address: 0x62\u003c\/li\u003e\n\u003cli\u003eProduct Size: 32*27*8mm\/1.26×1.06×0.31\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eCO2:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccuracy: ±(40 ppm + 5% MV)\u003c\/li\u003e\n\u003cli\u003eMeasuring Range: 400 - 5000 ppm\u003c\/li\u003e\n\u003cli\u003eResponse Time: 60s\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eHumidity:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTypical Relative Humidity Accuracy: 6%RH\u003c\/li\u003e\n\u003cli\u003eRelative Humidity Measuring Range: 0 to 95%RH\u003c\/li\u003e\n\u003cli\u003eResponse Time: 120s\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eTemperature:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTypical Temperature Accuracy: 0.8℃\u003c\/li\u003e\n\u003cli\u003eTemperature Measuring Range: -10 to 60℃\u003c\/li\u003e\n\u003cli\u003eResponse Time: 120s\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePackage List:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eGravity: SCD41 Infrared CO2 Sensor x1\u003c\/li\u003e\n\u003cli\u003eGravity-4P I2C\/UART Sensor Cable x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDocuments\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0536\/\" target=\"_blank\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":41623415128197,"sku":"SN-000238-DFR","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/5819\/0725\/files\/1_2e797980-1e44-4798-baf9-f0f270b3253e.png?v=1778239733","url":"https:\/\/robotpishop.com\/products\/gravity-i2c-scd41-infrared-carbon-dioxide-co2-sensor-400-5000-ppm","provider":"Robot Pi Shop","version":"1.0","type":"link"}