DFRobot
Gravity: UART Infrared CO2 Sensor (0-50000ppm), air sensor
The Gravity UART Infrared CO2 Sensor uses non-dispersive infrared (NDIR) technology to measure carbon dioxide concentrations from 0 to 50,000 ppm. It offers ...
The Gravity UART Infrared CO2 Sensor uses non-dispersive infrared (NDIR) technology to measure carbon dioxide concentrations from 0 to 50,000 ppm. It offers excellent selectivity with no oxygen dependency, built-in temperature compensation, and a service life of over 5 years. The UART interface makes it compatible with Arduino, Raspberry Pi, and other microcontrollers.
The sensor features high sensitivity, fast response, and resistance to water vapour interference — making it suitable for HVAC monitoring, indoor air quality, industrial safety, and agricultural process control.
Key Features
- Detection – Carbon dioxide (CO2) via NDIR technology
- Measuring Range – 0 to 50,000 ppm
- Accuracy – ±(50 ppm + 5% of reading)
- Response Time – T90 < 30 seconds
- Preheating Time – 3 minutes
- Interface – UART (Gravity connector)
- Operating Voltage – 4.5V to 5.5V DC (5V required, even with 3.3V microcontrollers)
- Average Current – <85 mA
- Operating Temperature – 0°C to 50°C
- Operating Humidity – 0–95% RH (no condensation)
- Temperature Compensation – Built-in
- Service Life – >5 years
- Board Dimensions – 21 × 27.11mm
- Weight – 42g
Ideal For
- Indoor air quality monitoring
- HVAC and refrigeration systems
- Industrial process and safety monitoring
- Agricultural and animal husbandry environments
Package Contents
- 1× UART infrared CO2 sensor probe (0–50,000 ppm)
- 1× Sensor converter board
- 1× 6-pin sensor cable
- 1× PH2.0 Gravity UART cable
- 1× XH2.54 4-pin header
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- ppm
- ppm means parts per million, a common way to express very small gas concentrations in air. For CO₂ sensors, the ppm range tells you what levels the sensor can measure, such as normal indoor air through to poorly ventilated spaces.
- Temperature compensation
- Temperature compensation means the sensor adjusts its readings to reduce errors caused by changes in water temperature. This matters for field monitoring because ponds, rivers, and tanks can vary in temperature throughout the day and across seasons.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
Find this product in
Brands
Supplier page — dfrobot.com
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Related Tutorials
Free guides on learn.littlebird.com.au
