{"title":"Gravity: SO2 Sensor (Calibrated) - I2C & UART","handle":"gravity-so2-sensor-calibrated-i2c-amp-uart","url":"/products/gravity-so2-sensor-calibrated-i2c-amp-uart","description":"A factory-calibrated electrochemical sulfur dioxide (SO2) sensor with I2C, UART, and analogue output modes. Part of the DFRobot Gravity gas sensor series, this module quickly and accurately measures SO2 concentration for industrial monitoring and environmental protection applications.\n\nThe electrochemical probe offers strong interference resistance, high stability, and high sensitivity with a lifespan of over two years. The signal conversion board features 32 configurable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function. Compatible with Arduino, ESP32, and Raspberry Pi via the Gravity 4-pin connector.\n\nKey Features\n\n\nFactory Calibrated – Ready for accurate measurement out of the box\n\nTriple Output – I2C, UART (0–3V), and analogue voltage\n\nElectrochemical Sensing – High sensitivity with strong anti-interference capability\n\n32 I2C Addresses – Configurable for multi-sensor setups on a single bus\n\nTemperature Compensation – Integrated algorithm for consistent readings\n\nThreshold Alarm – Built-in alert function for concentration limits\n\n2+ Year Lifespan – Long-lasting probe in normal air conditions\n\nGravity Interface – Plug-and-play 4-pin connector\n\n\nIdeal For\n\nIndustrial SO2 emissions monitoring\nEnvironmental air quality systems\nSafety and compliance detection equipment\nMulti-gas monitoring stations (compatible with 12 sensors in the DFRobot series)\n\n\nSpecifications\n\n\nDetection Gas – Sulfur Dioxide (SO2)\n\nDetection Range – 0–20 ppm\n\nWorking Voltage – 3.3–5.5V DC\n\nWorking Current – <5mA\n\nOutput Signal – I2C, UART (0–3V), analogue voltage\n\nWorking Temperature – –20°C to +50°C\n\nWorking Humidity – 15–90% RH (non-condensing)\n\nStorage Temperature – –20°C to +50°C\n\nLifespan – >2 years (in air)\n\nBoard Size – 37 × 32mm\n\nCompatibility – Arduino, ESP32, Raspberry Pi\n\n\nPackage Contents\n\n1× Gravity SO2 Signal Conversion Board\n1× SO2 Sensor Probe\n1× Gravity 4-Pin Cable\n\n\nResources\n\nProduct Wiki\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":2423,"title":"Default Title","sku":"DF-SEN0470","price":275.34,"on_sale":false,"in_stock":true,"available_quantity":79,"option1":"Default Title"}]}