{"product_id":"gravity-stcc4-true-carbon-dioxide-co2-sensor-3-in-1-air-quality-monitoring-400-5000ppm","title":"Gravity: STCC4 True Carbon Dioxide (CO2) Sensor (3-in-1 Air Quality Monitoring, 400 ~ 5000ppm)","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThe Gravity: STCC4 Carbon Dioxide (CO2) Sensor is a highly cost-effective, multi-functional air quality monitoring module designed for rapid hardware integration and scalable deployments. Utilizing the \u003cb\u003eSensirion STCC4 \u003c\/b\u003ehigh-performance gas sensing chip based on the \u003cb\u003eThermal Conductivity (TC) measurement principle,\u003c\/b\u003e this sensor delivers stable and reliable CO2 concentration readings. Its standout feature is the combination of \u003cb\u003eextreme affordability with 3-in-1 measurement capabilities\u003c\/b\u003e, integrating an onboard SHT40 sensor to \u003cb\u003eprovide simultaneous CO2 (with a measurement range of 400 to 5,000 ppm \u003c\/b\u003eand an \u003cb\u003eaccuracy of ±[100 ppm + 10%]), ambient temperature, and humidity data.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eOperating on a wide 3.3V to 5V voltage range and communicating via a \u003cb\u003estandard I2C interface\u003c\/b\u003e, it eliminates complex wiring and soldering. This makes the module highly suitable for deploying multi-node indoor air quality monitoring networks, building automation systems, smart home setups, and educational STEM projects where budget constraints, compact size, and ease of use are primary considerations.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34018-content1.webp?v=1791321551\" alt=\"\"\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTrue CO2 Measurement\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe Gravity STCC4 CO2 sensor powered by Sensirion’s advanced Thermal Conductivity (TC) technology, it directly measures the physical thermal properties of the surrounding air to calculate absolute CO2 concentration (400–5000 ppm). Supported by a built-in Automatic Self-Calibration (ASC) algorithm, it ensures long-term stability and pin-point accuracy. Say goodbye to inaccurate estimations and build your HVAC automations, air quality alarms, and smart home systems on data you can actually trust.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34018-content2.webp?v=1791321576\" alt=\"\"\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnmatched Cost-Effectiveness for Scalable IoT Networks \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eBy leveraging Thermal Conductivity technology, the manufacturing and operational costs are significantly reduced compared to traditional NDIR or PAS sensors. This high accessibility allows developers, engineers, and educators to build multi-room air quality networks or large-scale distributed IoT deployments without exceeding hardware budgets. It provides a highly viable alternative when deploying dozens of high-cost professional sensors is financially impractical.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34018-content3.webp?v=1791321609\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eFigure: Internal structural diagram illustrating the Thermal Conductivity (TC) measurement principle utilized by the STCC4 chip.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e3-in-1 Sensing with Automatic Compensation \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe inclusion of the \u003cb\u003eonboard SHT40 sensor\u003c\/b\u003e transforms the module from a single-purpose gas detector into a comprehensive environmental node. It continuously monitors ambient temperature and humidity, actively utilizing this data to automatically compensate the CO₂ readings. This ensures reliable accuracy in fluctuating indoor climates, outputs three critical environmental metrics from a single device, and simplifies the overall system architecture.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34018-content4.webp?v=1791321632\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSeamless Integration and Plug-and-Play Design \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHardware development is streamlined through the \u003cb\u003estandard Gravity I2C interface\u003c\/b\u003e. The wide \u003cb\u003e3.3V to 5V\u003c\/b\u003e operating voltage ensures native compatibility with popular microcontrollers such as Arduino, ESP32, and Raspberry Pi. The plug-and-play nature eliminates the need for breadboards, soldering, or complex level-shifting circuitry, significantly reducing development time and accelerating the transition from prototype to final product.\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLow Power Consumption for Continuous Monitoring \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for modern, energy-conscious applications, the module supports a highly efficient power profile. With a continuous measurement current of just 950 μA and a deep sleep mode drawing merely 1 μA, it is optimized for battery-powered smart home nodes and remote environmental monitoring stations requiring long-term, uninterrupted operation.\u003c\/p\u003e\n\u003cp\u003eFigure: Real-time serial monitor data demonstrating simultaneous CO2, temperature, and humidity readings output directly from the sensor.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh measurement accuracy: Based on the TC principle for stable and reliable data\u003c\/li\u003e\n\u003cli\u003eLow power consumption: Suitable for battery-powered or always-on systems\u003c\/li\u003e\n\u003cli\u003eCompact size: Easy to integrate into space-constrained and modular design\u003c\/li\u003e\n\u003cli\u003eDigital output: I2C interface with strong anti-interference capability\u003c\/li\u003e\n\u003cli\u003ePlug and play: Standard Gravity interface, no soldering required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIndoor air quality monitoring: Real-time CO₂ detection to improve comfort in homes and offices\u003c\/li\u003e\n\u003cli\u003eSmart home systems: Works with ventilation, air conditioning, and windows for automated airflow control\u003c\/li\u003e\n\u003cli\u003eBuilding and classroom monitoring: Ensures air safety in high-occupancy environments\u003c\/li\u003e\n\u003cli\u003eEnvironmental monitoring \u0026amp; IoT: Suitable for various IoT air quality nodes\u003c\/li\u003e\n\u003cli\u003eEducational \u0026amp; experimental projects: Intuitive demonstration of CO₂ concentration changes for STEM education\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34018-content11.webp?v=1791321699\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSupply Voltage: 3.3–5.0 V DC\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: 10°C ~ 40°C\u003c\/li\u003e\n\u003cli\u003eOperating Humidity: 20% ~ 80% RH (non-condensing)\u003c\/li\u003e\n\u003cli\u003eOperating Current:\u003cbr\u003ePeak: 4.2 mA\u003cbr\u003eContinuous Measurement: 950 μA\u003cbr\u003eSingle-shot Mode: 100 μA (10s sampling interval)\u003cbr\u003eDeep Sleep: 1 μA\u003c\/li\u003e\n\u003cli\u003eCO₂ Measurement Range: 400–5000 ppm\u003c\/li\u003e\n\u003cli\u003eCO₂ Accuracy: ±(100 ppm + 10% of reading)\u003c\/li\u003e\n\u003cli\u003eResponse Time: 20 s\u003c\/li\u003e\n\u003cli\u003eInterface: Gravity I2C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGravity STCC4 CO2 Sensor x1\u003c\/li\u003e\n\u003cli\u003eGravity 4Pin Cable 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\/sen0678\/\" 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":67580512567373,"sku":"E34018-001","price":29.91,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34018-win1.jpg?v=1791321713","url":"https:\/\/www.mlab.com.au\/products\/gravity-stcc4-true-carbon-dioxide-co2-sensor-3-in-1-air-quality-monitoring-400-5000ppm","provider":"MLAB","version":"1.0","type":"link"}