{"product_id":"gravity-electrochemical-oxygen-o2-sensor-0-25-vol-i2c","title":"Gravity: Electrochemical Oxygen \/ O2 Sensor (0-25%Vol, I2C)","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThis Oxygen \/ O2 Sensor is based on electrochemical principles and can measure ambient oxygen concentration accurately and conveniently. With high anti-interference ability, high stability, and high sensitivity, this Arduino-compatible oxygen sensor can be widely applied to portable devices, air quality monitoring systems, and environments such as industries, mines, warehouses, and other spaces where air circulation is limited.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDesigned for measuring oxygen levels in ambient air (0–25%Vol), \u003c\/b\u003ethis sensor is ideal for applications such as environmental monitoring, safety detection in enclosed spaces, and oxygen concentration analysis.\u003c\/p\u003e\n\u003cp\u003eThis compact DFRobot oxygen sensor supports I2C output and can be calibrated in air for accurate measurement. It is compatible with many mainboards like Arduino Uno, ESP32, and Raspberry Pi. Its measurement range is 0~25%Vol, with a resolution of up to 0.15%Vol. It supports a wide input voltage range from 3.3V to 5.5V.\u003c\/p\u003e\n\u003cp\u003eWith a \u003cb\u003eservice life of\u003c\/b\u003e \u003cb\u003eover 2 years under normal conditions,\u003c\/b\u003e along with a simple Gravity interface and practical sample code, users can quickly build their own oxygen concentration monitoring systems.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFor optimal accuracy, periodic calibration is recommended depending on the usage environment. \u003c\/b\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh sensitivity for accurate ambient O2 measurement\u003c\/li\u003e\n\u003cli\u003eStandard I2C interface for simple data communication\u003c\/li\u003e\n\u003cli\u003eCompatible with both 3.3V and 5V micro-controllers\u003c\/li\u003e\n\u003cli\u003eBuilt-in polarity protection for enhanced hardware safety\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePortable air quality monitoring devices\u003c\/li\u003e\n\u003cli\u003eEnvironmental monitoring in industries and mines\u003c\/li\u003e\n\u003cli\u003eAir circulation tracking in warehouses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDetection of Gas: oxygen \/ O2\u003c\/li\u003e\n\u003cli\u003eOperating Voltage: 3.3 to 5.5V DC\u003c\/li\u003e\n\u003cli\u003eOutput Signal: I2C output\u003c\/li\u003e\n\u003cli\u003eMeasurement Range: 0~25%Vol\u003c\/li\u003e\n\u003cli\u003eMaximum Measurement limit: 30%Vol\u003c\/li\u003e\n\u003cli\u003eResolution: 0.15%Vol\u003c\/li\u003e\n\u003cli\u003eSensitivity: (0.10±0.05) mA (in the air)\u003c\/li\u003e\n\u003cli\u003eStability: \u0026lt;2% (Every month)\u003c\/li\u003e\n\u003cli\u003eRepeatability: \u0026lt;2%\u003c\/li\u003e\n\u003cli\u003eResponse Time: ≤15 seconds\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -20～50℃\u003c\/li\u003e\n\u003cli\u003eOperating humidity: 0～99%RH (no condensation)\u003c\/li\u003e\n\u003cli\u003ePressure Range: standard atmospheric pressure ±10%\u003c\/li\u003e\n\u003cli\u003eLifetime:\u0026gt; 2 years (in the air)\u003c\/li\u003e\n\u003cli\u003eDimension(L x W x H): 37 * 27 * 24.5 mm\/1.46 * 1.06 * 0.97 inches\u003c\/li\u003e\n\u003cli\u003eWeight:0.037kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGravity: Electrochemical Oxygen \/ O2 Sensor (0-25%Vol, I2C) x1\u003c\/li\u003e\n\u003cli\u003eGravity-4pin I2C Cable x1\u003c\/li\u003e\n\u003cli\u003eM310 Nylon post x4\u003c\/li\u003e\n\u003cli\u003eM35 Screws x8\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\/sen0322\/\" 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":67580653076557,"sku":"E34025-001","price":117.53,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34025-win1.jpg?v=1791324456","url":"https:\/\/www.mlab.com.au\/products\/gravity-electrochemical-oxygen-o2-sensor-0-25-vol-i2c","provider":"MLAB","version":"1.0","type":"link"}