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 ...
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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.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- 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 is when a sensor or instrument adjusts its readings to reduce errors caused by changes in temperature. This matters because a sensor's raw output often drifts as conditions warm or cool, so compensation keeps readings more consistent and accurate over time.
- UART
- UART is a simple asynchronous serial interface that sends data over separate transmit and receive wires, usually labelled TX and RX, with both ends set to the same baud rate. It is a common way for microcontrollers and other serial devices to exchange data.
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Supplier page — dfrobot.com
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SEN0220 mh z16 schematics 1.0
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SEN0220 mh z16 datasheet 1.0
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