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Gravity STCC4 True CO2 Sensor With Temperature And Humidity Monitoring For Indoor Air Quality Applications
The Gravity STCC4 True Carbon Dioxide Sensor is a highly cost-effective 3-in-1 air quality monitoring module designed for accurate indoor environmental sensing and large-scale deployment projects. Powered by the Sensirion STCC4 gas sensing chip, the sensor uses Thermal Conductivity (TC) measurement technology to provide stable and reliable true CO2 concentration measurements. Unlike inferred air quality sensors, the STCC4 directly measures carbon dioxide levels, making it ideal for indoor air quality monitoring, ventilation control, and smart building applications.
In addition to CO2 monitoring, the module integrates a Sensirion SHT40 sensor to simultaneously measure ambient temperature and relative humidity. Supporting a CO2 measurement range from 400ppm to 5000ppm with an accuracy of ±(100ppm + 10%), the sensor provides comprehensive environmental data through a standard I2C interface. Operating from 3.3V to 5V, the module is compatible with Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller platforms. Its compact design, easy integration, and affordable cost make it an excellent choice for multi-node air quality networks, smart homes, building automation systems, classrooms, and STEM education projects.
Key Features
- True CO2 Measurement: Direct carbon dioxide sensing using Thermal Conductivity technology.
- 3-in-1 Environmental Monitoring: Measures CO2, temperature, and humidity simultaneously.
- Sensirion STCC4 Sensor: Reliable and stable CO2 measurement performance.
- Integrated SHT40 Sensor: Provides accurate temperature and humidity data.
- Wide CO2 Measurement Range: 400ppm to 5000ppm detection capability.
- High Measurement Accuracy: CO2 accuracy of ±(100ppm + 10%).
- I2C Communication Interface: Simple integration with embedded systems.
- Wide Operating Voltage: Supports 3.3V to 5V input.
- Compact Design: Suitable for space-constrained installations.
- Low Wiring Complexity: Plug-and-play hardware integration.
- Ideal For Multi-Node Networks: Supports scalable monitoring deployments.
- Compatible With Popular Platforms: Works with Arduino, ESP32, Raspberry Pi, and STM32.
Applications
- Indoor air quality monitoring
- Smart home automation
- Building management systems
- HVAC ventilation control
- Classroom air quality monitoring
- Office environmental monitoring
- IoT environmental sensing
- Multi-room monitoring networks
- Educational STEM projects
- Smart buildings
- Environmental data logging
- Commercial space air quality management
True CO2 Measurement
The Gravity STCC4 CO2 sensor uses Sensirion's innovative Thermal Conductivity (TC) technology to directly analyze the physical thermal properties of the surrounding air and determine absolute CO2 concentration (400-5000 ppm). It has a built-in Automatic Self-Calibration (ASC) algorithm that provides long-term stability and precise accuracy. Say goodbye to false estimates and instead base your HVAC automations, air quality alarms, and smart home systems on data that you can actually trust.
Unmatched Cost-Effectiveness for Scalable IoT Networks
Thermal Conductivity technology reduces production and operational expenses greatly compared to classic NDIR or PAS sensors. This high accessibility enables developers, engineers, and educators to create multi-room air quality networks or large-scale distributed IoT deployments without exceeding hardware budgets. It offers a highly viable option when deploying dozens of high-priced professional sensors is not financially feasible.
3-in-1 Sensing with Automatic Compensation
The addition of the onboard SHT40 sensor elevates the module from a single-purpose gas detector to a full environmental node. It continuously monitors ambient temperature and humidity, and uses this data to automatically correct CO₂ measurements. This maintains consistent accuracy in changing indoor climates, provides three key environmental measurements from a single device, and simplifies the overall system architecture.
Seamless Integration and Plug-and-Play Design
The standard Gravity I2C interface helps to expedite hardware development. The wide operating voltage range of 3.3V to 5V assures native compatibility with common microcontrollers including Arduino, ESP32, and Raspberry Pi. The plug-and-play feature eliminates the need for breadboards, soldering, or sophisticated level-shifting circuitry, considerably decreasing development time and speeding up the transition from prototype to finished product.
Figure: Plug-and-play hardware integration of the Gravity STCC4 CO2 Sensor with an Arduino microcontroller via a standard I2C interface.
Low Power Consumption for Continuous Monitoring
The module is designed for modern, energy-conscious applications and has a very efficient power profile. With a continuous measurement current of only 950 μA and a deep sleep mode drawing only 1 μA, it is designed for battery-powered smart home nodes and remote environmental monitoring stations that require long-term, uninterrupted operation.
Package List:
- Gravity STCC4 CO2 Sensor x1
- Gravity 4Pin Cable x1
