Sensirion SCD40 Gas Sensor Module Purple - CO2, Temperature, Humidity, I2C Interface
Sensirion SCD40 Gas Sensor Module Purple - CO2, Temperature, Humidity, I2C Interface - Image 2
SKU: SENS-0746
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Sensirion SCD40 Gas Sensor Module Purple - CO2, Temperature, Humidity, I2C Interface

â‚č1,919.00 (Inclusive of all taxes)
Out of Stock

The Sensirion SCD40 Gas Sensor Module integrates a genuine SCD40 IC to provide high-accuracy CO₂, temperature, and relative humidity measurements via a digital I2C interface. Compatible with 3.3V and 5V logic systems, it is designed for seamless integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers for indoor air quality monitoring and IoT applications.

Features

  • Genuine Sensirion SCD40 sensor with photoacoustic (PAS) CO₂ measurement technology.
  • 3-in-1 sensing: CO₂ (400–5000 ppm), temperature (-10 to +60°C), and relative humidity (0–100% RH).
  • Digital I2C interface with a default address of 0x62 for easy microcontroller integration.
  • Ultra-low power consumption ideal for battery-powered and portable IoT devices.
  • Factory calibrated for reliable, long-term performance with minimal drift.

Out of stock

Description

The SCD40 module employs Sensirion’s advanced photoacoustic spectroscopy (PAS) principle for CO₂ detection, which offers high accuracy and stability while consuming minimal power. This technology, combined with integrated temperature and humidity sensors, provides a comprehensive environmental monitoring solution in a single, compact package.

The module outputs fully calibrated digital data via the I2C bus, simplifying system design and reducing development time. Its wide operating voltage range of 2.4V to 5.5V DC ensures compatibility with a variety of host systems, from 3.3V microcontrollers to 5V Arduino boards. The fast response time and excellent measurement stability make it suitable for dynamic environments requiring real-time air quality feedback.

Key Features

  • High-precision, three-parameter environmental sensing from a single IC.
  • Photoacoustic CO₂ sensing ensures long-term stability and low cross-sensitivity.
  • Wide operating voltage range (2.4V–5.5V) supports flexible system integration.
  • Ultra-low power operation extends battery life in wireless sensor nodes.
  • Factory calibration eliminates the need for user calibration routines.
  • Compact purple PCB with standard 0.1" header pins for easy prototyping.
  • Robust digital I2C communication ensures reliable data transmission.
  • Fast warm-up and response time for real-time monitoring applications.

Applications

  • Indoor air quality (IAQ) monitoring in smart homes, offices, and classrooms.
  • Demand-controlled ventilation (DCV) and HVAC system optimization.
  • Environmental monitoring in greenhouses and controlled agricultural settings.
  • Portable and wearable air quality loggers for health and safety.
  • IoT sensor nodes for building automation and smart city infrastructure.

Technical Specifications

Sensor ICSensirion SCD40
Measured ParametersCO₂, Temperature, Relative Humidity
CO₂ Measurement TechnologyPhotoacoustic Spectroscopy (PAS)
CO₂ Measurement Range400 ppm – 5000 ppm
CO₂ Accuracy±(50 ppm + 5% of reading)
Temperature Range-10°C to +60°C
Temperature Accuracy±0.8°C
Humidity Range0% to 100% RH
Humidity Accuracy±6% RH
Operating Voltage2.4V – 5.5V DC
Communication InterfaceI2C
Default I2C Address0x62
Module Dimensions (approx.)6.0 x 5.0 x 0.4 cm (L x W x H)
Weight (approx.)0.01 kg

Frequently Asked Questions

What is the operating voltage range for the SCD40 module?

The SCD40 module supports a wide operating voltage range from 2.4V to 5.5V DC. This makes it directly compatible with both 3.3V logic systems (like ESP32 or Raspberry Pi) and 5V systems (like most Arduino boards) without requiring a level shifter.

How do I communicate with the SCD40 sensor module?

Communication is via a standard I2C interface. The sensor has a default I2C address of 0x62. You can connect the module's SDA and SCL pins to your microcontroller's corresponding I2C pins. Libraries are available for Arduino, Python (for Raspberry Pi), and other platforms to simplify reading the CO₂, temperature, and humidity data.

Is the SCD40 sensor factory calibrated?

Yes, the Sensirion SCD40 IC is factory calibrated. This means you can start taking measurements immediately without performing a user calibration, ensuring reliable and accurate data from the first power-on. The calibration is designed for long-term stability.

What is the warm-up time for the SCD40 sensor?

The SCD40 requires a brief warm-up period after power-on to stabilize its internal optics and reach specified accuracy. For the most accurate readings, it is recommended to allow approximately 5 minutes of operation before relying on the data, especially after a cold start or prolonged storage.

Can this sensor be used for outdoor air quality monitoring?

While technically capable, the SCD40 is primarily designed for indoor environmental monitoring. Its specified operating temperature range is -10°C to +60°C, and exposure to direct rain, condensation, or extreme outdoor conditions outside its IP rating (the bare module is not waterproof) is not recommended without proper protective enclosure.

Package Includes

  • 1 x SCD40 Gas Sensor Module (Purple PCB)
  • 1 x Header Pin Strip

Additional Information

Weight 0.01 kg
Dimensions 6 × 5 × 0.4 cm

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