{"product_id":"sparkfun-co2-sensor-stc31-qwiic","title":"SparkFun CO2 Sensor - STC31 (Qwiic)","description":"\u003cp\u003eThe SparkFun STC31 is a high-precision, Qwiic-enabled sensor that accurately measures extreme CO₂ concentrations up to 100% volume.\u003c\/p\u003e\n\u003cdiv\u003e \n \u003ch2\u003eFeatures \u0026amp; Specs\u003c\/h2\u003e \n \u003cp\u003e\u003c\/p\u003e \n \u003cdiv\u003e \n  \u003cdiv\u003e \n   \u003cdiv\u003e \n    \u003cul\u003e \n     \u003cli\u003eSensirion STC31 CO\u003csub\u003e2\u003c\/sub\u003e Sensor \n      \u003cul\u003e \n       \u003cli\u003eThermal conductivity sensor provides calibrated gas concentration and temperature output\u003c\/li\u003e \n       \u003cli\u003eCalibrated for: CO\u003csub\u003e2\u003c\/sub\u003e in N2; and CO\u003csub\u003e2\u003c\/sub\u003e in air\u003c\/li\u003e \n       \u003cli\u003eMeasurement ranges: 0 to 25 vol%; 0 to 100 vol%\u003c\/li\u003e \n       \u003cli\u003eAccuracy: 0.5 vol% + 3% measured value; 1 vol% + 3% measured value\u003c\/li\u003e \n       \u003cli\u003eRepeatability: 0.2 vol%\u003c\/li\u003e \n       \u003cli\u003eTemperature measurement range: -20 °C to +85 °C\u003c\/li\u003e \n       \u003cli\u003eConcentration and temperature resolution: 16-bit\u003c\/li\u003e \n       \u003cli\u003eStart-up time: 14 ms\u003c\/li\u003e \n       \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC address (configurable): 0x29 (default), 0x2A, 0x2B, 0x2C\u003c\/li\u003e \n       \u003cli\u003eSupply Voltage: 2.7V\u003csub\u003eMin\u003c\/sub\u003e, 3.3V\u003csub\u003eTyp\u003c\/sub\u003e, 5.5V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n       \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Qwiic bus operates at 3.3V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n      \u003c\/ul\u003e \u003c\/li\u003e \n     \u003cli\u003eSensirion SHTC3 Humidity and Temperature Sensor \n      \u003cul\u003e \n       \u003cli\u003eAllows the STC31 to compensate for humidity and temperature\u003c\/li\u003e \n       \u003cli\u003eTypical accuracy: ±2 %RH and ±0.2 °C\u003c\/li\u003e \n       \u003cli\u003eSpecified humidity range (extended): 0 to 100 %RH\u003c\/li\u003e \n       \u003cli\u003eSpecified temperature range: -40 °C to +125 °C\u003c\/li\u003e \n       \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC address (non-configurable): 0x70\u003c\/li\u003e \n       \u003cli\u003eSupply Voltage: 1.62V\u003csub\u003eMin\u003c\/sub\u003e, 3.3V\u003csub\u003eTyp\u003c\/sub\u003e, 3.6V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n       \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Qwiic bus operates at 3.3V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n      \u003c\/ul\u003e \u003c\/li\u003e \n     \u003cli\u003eDual Qwiic connectors\u003c\/li\u003e \n     \u003cli\u003ePower LED (configurable)\u003c\/li\u003e \n     \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC pull-ups (configurable)\u003c\/li\u003e \n    \u003c\/ul\u003e \n   \u003c\/div\u003e \n  \u003c\/div\u003e \n \u003c\/div\u003e \n \u003cp\u003e\u003c\/p\u003e \n\u003c\/div\u003e\n\u003cdiv\u003e \n \u003ch2\u003eFeatures \u0026amp; Specs\u003c\/h2\u003e \n \u003cp\u003e\u003c\/p\u003e \n \u003cdiv\u003e \n  \u003cdiv\u003e \n   \u003cdiv\u003e \n    \u003cul\u003e \n     \u003cli\u003eSensirion STC31 CO\u003csub\u003e2\u003c\/sub\u003e Sensor \n      \u003cul\u003e \n       \u003cli\u003eThermal conductivity sensor provides calibrated gas concentration and temperature output\u003c\/li\u003e \n       \u003cli\u003eCalibrated for: CO\u003csub\u003e2\u003c\/sub\u003e in N2; and CO\u003csub\u003e2\u003c\/sub\u003e in air\u003c\/li\u003e \n       \u003cli\u003eMeasurement ranges: 0 to 25 vol%; 0 to 100 vol%\u003c\/li\u003e \n       \u003cli\u003eAccuracy: 0.5 vol% + 3% measured value; 1 vol% + 3% measured value\u003c\/li\u003e \n       \u003cli\u003eRepeatability: 0.2 vol%\u003c\/li\u003e \n       \u003cli\u003eTemperature measurement range: -20 °C to +85 °C\u003c\/li\u003e \n       \u003cli\u003eConcentration and temperature resolution: 16-bit\u003c\/li\u003e \n       \u003cli\u003eStart-up time: 14 ms\u003c\/li\u003e \n       \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC address (configurable): 0x29 (default), 0x2A, 0x2B, 0x2C\u003c\/li\u003e \n       \u003cli\u003eSupply Voltage: 2.7V\u003csub\u003eMin\u003c\/sub\u003e, 3.3V\u003csub\u003eTyp\u003c\/sub\u003e, 5.5V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n       \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Qwiic bus operates at 3.3V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n      \u003c\/ul\u003e \u003c\/li\u003e \n     \u003cli\u003eSensirion SHTC3 Humidity and Temperature Sensor \n      \u003cul\u003e \n       \u003cli\u003eAllows the STC31 to compensate for humidity and temperature\u003c\/li\u003e \n       \u003cli\u003eTypical accuracy: ±2 %RH and ±0.2 °C\u003c\/li\u003e \n       \u003cli\u003eSpecified humidity range (extended): 0 to 100 %RH\u003c\/li\u003e \n       \u003cli\u003eSpecified temperature range: -40 °C to +125 °C\u003c\/li\u003e \n       \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC address (non-configurable): 0x70\u003c\/li\u003e \n       \u003cli\u003eSupply Voltage: 1.62V\u003csub\u003eMin\u003c\/sub\u003e, 3.3V\u003csub\u003eTyp\u003c\/sub\u003e, 3.6V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n       \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Qwiic bus operates at 3.3V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \n      \u003c\/ul\u003e \u003c\/li\u003e \n     \u003cli\u003eDual Qwiic connectors\u003c\/li\u003e \n     \u003cli\u003ePower LED (configurable)\u003c\/li\u003e \n     \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC pull-ups (configurable)\u003c\/li\u003e \n    \u003c\/ul\u003e \n   \u003c\/div\u003e \n  \u003c\/div\u003e \n \u003c\/div\u003e \n \u003cp\u003e\u003c\/p\u003e \n\u003c\/div\u003e\n\u003ch2\u003eDocumentation\u003c\/h2\u003e \n\u003cp\u003e\u003c\/p\u003e \n\u003cul\u003e \n \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/c\/9\/5\/0\/b\/SparkFun_STC31.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e \n \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/e\/a\/f\/8\/d\/SparkFun_STC31.zip\" target=\"_blank\" rel=\"noopener\"\u003eKiCad Files\u003c\/a\u003e\u003c\/li\u003e \n \u003cli\u003e\u003ca href=\"https:\/\/docs.sparkfun.com\/SparkFun_CO2_Sensor-STC31\" target=\"_blank\" rel=\"noopener\"\u003eHookup Guide\u003c\/a\u003e\u003c\/li\u003e \n \u003cli\u003eDatasheets: \n  \u003cul\u003e \n   \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/6\/2\/4\/0\/0\/Sensirion_Thermal_Conductivity_Datasheet_STC31_D1.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSTC31\u003c\/a\u003e\u003c\/li\u003e \n   \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/9\/4\/d\/1\/3\/Sensirion_Humidity_Sensors_SHTC3_Datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSHTC3\u003c\/a\u003e\u003c\/li\u003e \n  \u003c\/ul\u003e \u003c\/li\u003e \n \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/4\/5\/3\/1\/a\/Sensirion_TC_AN_STCxx_FieldCalibration_D1.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSTC Field Calibration Guide\u003c\/a\u003e\u003c\/li\u003e \n \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/4\/b\/a\/8\/1\/Sensirion_TC_AN_STCxx_Design-In_Guide_D1.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSTC Design-In Guide\u003c\/a\u003e\u003c\/li\u003e \n \u003cli\u003eLibraries: \n  \u003cul\u003e \n   \u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_STC3x_Arduino_Library\" target=\"_blank\" rel=\"noopener\"\u003eArduino Library\u003c\/a\u003e\u003c\/li\u003e \n   \u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/qwiic_stc3x_py\" target=\"_blank\" rel=\"noopener\"\u003ePython \/ MicroPython \/ CircuitPython Package\u003c\/a\u003e\u003c\/li\u003e \n  \u003c\/ul\u003e \u003c\/li\u003e \n \u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_CO2_Sensor-STC31\" target=\"_blank\" rel=\"noopener\"\u003eGitHub Hardware Repo\u003c\/a\u003e\u003c\/li\u003e \n\u003c\/ul\u003e \n\u003cp\u003e\u003c\/p\u003e \n\u003cdiv\u003e \n \u003cdiv\u003e \n  \u003cdiv\u003e \n   \u003cdiv\u003e \n    \u003cdiv\u003e \n     \u003cdiv\u003e \n      \u003cdiv\u003e \n       \u003cp\u003e\u003c\/p\u003e \n       \u003cdiv\u003e \n        \u003cspan\u003e \u003cb\u003eWARNING:\u003c\/b\u003e This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. See link below for more information. \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e \u003c\/span\u003e \n       \u003c\/div\u003e \n      \u003c\/div\u003e \n     \u003c\/div\u003e \n     \u003cdiv\u003e\u003c\/div\u003e \n    \u003c\/div\u003e \n   \u003c\/div\u003e \n  \u003c\/div\u003e \n \u003c\/div\u003e \n\u003c\/div\u003e","brand":"sparkfun-10","offers":[{"title":"Default Title","offer_id":42644137017429,"sku":"29260:SEN-29260:spark","price":18270.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1034\/1611\/files\/29260-CO2-Sensor-STC31-Feature-Corrected.jpg?v=1782367002","url":"https:\/\/www.tanotis.com\/products\/sparkfun-co2-sensor-stc31-qwiic","provider":"Tanotis","version":"1.0","type":"link"}