Description
DFRobot released its latest wide range Arduino infrared CO2 sensor, which effective range is up to 0~50000ppm. This sensor is based on non-dispersive infrared (NDIR) technology and has good selectivity and oxygen-free dependency. It integrates temperature compensation and support UART communication mode. Most importantly, the product is easy to use; it is compatible with all types of microcontrollers with UART port, like Arduino, Raspberry Pi and other microcontrollers. Besides, it has a long service life, up to 5 years!
In addition, this UART Infrared CO2 Sensor is a high-performance sensor that combines technology of mature infrared absorption gas detection with precision optical circuit design as well as sophisticated circuit design. It has characteristics such as wide range detection, high sensitivity, high resolution, low power consumption, fast response, anti-water vapor interference, no poisoning, high stability and long life.
It can be widely used in HVAC refrigeration and indoor air quality monitoring, industrial process and safety monitoring, agricultural and animal husbandry production process monitoring, etc..

This is a 0~50000ppm wide range CO2 sensor with UART communication port. It supports Arduino, Raspberry Pi and other microcontrollers. In addition, we also have a 0~5000 ppm high precision infrared sensor with Gravity Analog interface, more easy to use: Gravity Analog Infrared CO2 Sensor (0~5000ppm).
In addition, this UART Infrared CO2 Sensor is a high-performance sensor that combines technology of mature infrared absorption gas detection with precision optical circuit design as well as sophisticated circuit design. It has characteristics such as wide range detection, high sensitivity, high resolution, low power consumption, fast response, anti-water vapor interference, no poisoning, high stability and long life.
It can be widely used in HVAC refrigeration and indoor air quality monitoring, industrial process and safety monitoring, agricultural and animal husbandry production process monitoring, etc..

DFRobot LCD Keypad Shield with UART Infrared CO2 Sensor
This is a 0~50000ppm wide range CO2 sensor with UART communication port. It supports Arduino, Raspberry Pi and other microcontrollers. In addition, we also have a 0~5000 ppm high precision infrared sensor with Gravity Analog interface, more easy to use: Gravity Analog Infrared CO2 Sensor (0~5000ppm).
Gravity CO2 Sensor Selection Guide | |||
![]() |
![]() |
![]() |
|
Product Name | Gravityط£آ¯ط¢آ¼ط¥طŒAnalogElectrochemistry CO2 Sensor | Gravityط£آ¯ط¢آ¼ط¥طŒAnalog IR CO2 Sensor | Gravityط£آ¯ط¢آ¼ط¥طŒUART IRCO2 Sensor |
SKU | SEN0159 | SEN0219 | SEN0220 |
Operation Voltage | 3.7ط£آ¯ط¢آ½ط¥آ¾5V | 4.5ط£آ¯ط¢آ½ط¥آ¾5.5V | 4.5ط£آ¯ط¢آ½ط¥آ¾5.5V |
Output |
Gravity: Analog
(Analog2.7ط£آ¯ط¢آ½ط¥آ¾4.1V)
+
3P Header Digital Output(Alarm):0ط£آ¯ط¢آ½ط¥آ¾VCC Level
|
Gravity: Analogط¢آ
(Analog Output 0.4ط£آ¯ط¢آ½ط¥آ¾2V)
|
Gravity: UART
(0ط£آ¯ط¢آ½ط¥آ¾3.3V Level)
|
Measurement Principle |
Electrochemistry
ط£آ¯ط¢آ¼ط«â€ Solid electrolyte battery principleط£آ¯ط¢آ¼أ¢â‚¬آ°
|
NDIR(non-dispersive infrared) | NDIR(non-dispersive infrared) |
Measurement Range | 0ط£آ¯ط¢آ½ط¥آ¾10000 ppm | 0ط£آ¯ط¢آ½ط¥آ¾5000 ppm | 0ط£آ¯ط¢آ½ط¥آ¾50000 ppm |
Accuracy | ط¢آ±100ppm@400ppm | ط¢آ±(100ppm + 6% readings) | ط¢آ±(100ppm + 6% readings) |
Response Time | <20s | <90s | <30s |
Average Power | <1W | <430mW@5V | <430mW@5V |
Operation Temperature | -20ط£آ¢أ¢â‚¬â€چط¦â€™ط£آ¯ط¢آ½ط¥آ¾50ط£آ¢أ¢â‚¬â€چط¦â€™ | 0ط£آ¢أ¢â‚¬â€چط¦â€™ط£آ¯ط¢آ½ط¥آ¾50ط£آ¢أ¢â‚¬â€چط¦â€™ | 0ط£آ¢أ¢â‚¬â€چط¦â€™ط£آ¯ط¢آ½ط¥آ¾50ط£آ¢أ¢â‚¬â€چط¦â€™ |
Operation Humidity | 0ط£آ¯ط¢آ½ط¥آ¾95% RH (No condensation) | 0ط£آ¯ط¢آ½ط¥آ¾95% RH (No condensation) | 0ط£آ¯ط¢آ½ط¥آ¾95% RH (No condensation) |
Lifespan | >1 years | >5 years | >5 years |
Dimension
(PCB)
|
32*42 mm | 37*69 mm | 21*27.1 mm |
Features |
1.Large Range
2.Adjustable Alarm Threshold
3.Fast Response
4.Analog Output
|
1.High Accuracy
2.Long Lifespan
3.Auto Temperature Compensation
4.Water Vapor Interference Resistance
5.Ananglog Output
|
1.High Accuracy
2.Large Range
3.Long Lifespan
4.Auto Temperature Compensation
5.Water Vapor Interference Resistance
6.3.3V UART Output
|