SKU: SENS-0813
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Sensirion SCD40-D-R2 CO₂ Gas Sensor, Range: 400 ppm~2000 ppm, I2C Interface

₹1,539.00 (Inclusive of all taxes)
Out of Stock

The Sensirion SCD40-D-R2 is a miniature, high-precision CO₂ sensor module with an I2C digital interface, designed for seamless integration into 3.3V or 5V systems like Arduino, Raspberry Pi, ESP32, and industrial controllers for accurate indoor air quality monitoring.

Features

  • High-precision NDIR CO₂ sensing with ±5% accuracy.
  • Wide measurement range from 400 ppm to 2000 ppm.
  • Digital I2C interface for easy system integration.
  • Broad operating voltage range from 2.4V to 5.5V.
  • Compact LGA-20 SMD package for space-constrained designs.

Out of stock

Description

The SCD40-D-R2 from Sensirion is a state-of-the-art, photoacoustic NDIR (Non-Dispersive Infrared) sensor for carbon dioxide detection. It integrates the sensing element, signal processing, and a digital I2C interface into a single, compact LGA-20 surface-mount package. This design eliminates the need for complex external optics and provides a calibrated, temperature-compensated digital output.

Engineered for robustness, the sensor operates across an extended temperature range from -40°C to +85°C, ensuring reliable performance in demanding environments. Its low power consumption profile makes it ideal for battery-powered portable devices, smart HVAC systems, and IoT-based air quality monitoring stations where long-term, stable CO₂ measurement is critical.

Key Features

  • Photoacoustic NDIR sensing principle for high accuracy and long-term stability.
  • Fully calibrated and temperature-compensated digital output.
  • Ultra-low power consumption suitable for battery-operated applications.
  • Robust LGA-20 package designed for automated SMD assembly processes.
  • Wide supply voltage compatibility from 2.4V to 5.5V for flexible system design.
  • I2C digital communication ensures noise immunity and simple wiring.

Applications

  • Demand-controlled ventilation (DCV) in smart HVAC systems.
  • Indoor air quality (IAQ) monitoring in offices, schools, and smart buildings.
  • Portable and wearable CO₂ monitoring devices.
  • Agricultural greenhouse climate control and optimization.
  • IoT environmental sensing nodes for smart city deployments.

Technical Specifications

Manufacturer Part NumberSCD40-D-R2
Sensor TypeCarbon Dioxide (CO₂)
Measurement Range400 ppm ~ 2000 ppm
Accuracy±5%
Communication InterfaceI2C
Supply Voltage2.4V to 5.5V
Operating Temperature-40°C to +85°C
Mounting StyleSMD/SMT
Package / CaseLGA-20

Frequently Asked Questions

What is the operating voltage range for the SCD40-D-R2 sensor?

The SCD40-D-R2 operates from a supply voltage of 2.4V to 5.5V DC. This wide range allows for direct compatibility with both 3.3V and 5V logic systems commonly found in microcontrollers like Arduino, ESP32, and Raspberry Pi, without requiring a level shifter.

How do I communicate with this CO₂ sensor?

Communication is via a standard I2C (Inter-Integrated Circuit) digital interface. You will need to connect the SDA (data) and SCL (clock) lines to your host microcontroller, along with power and ground. The sensor comes pre-calibrated, providing direct digital CO₂ concentration readings over the I2C bus.

What is the measurement accuracy and range?

The sensor provides CO₂ concentration measurements from 400 parts per million (ppm) up to 2000 ppm with a stated accuracy of ±5%. It utilizes Sensirion's photoacoustic NDIR technology, which ensures high accuracy and excellent long-term stability for reliable air quality monitoring.

Is this sensor suitable for surface-mount assembly?

Yes, the SCD40-D-R2 is supplied in an LGA-20 surface-mount device (SMD) package. It is designed for automated pick-and-place assembly and reflow soldering processes, making it ideal for integration into compact, volume-produced electronic devices and PCBs.

Package Includes

  • 1 x Sensirion SCD40-D-R2 CO₂ Gas Sensor Module

Additional Information

Weight 0.05 kg
Dimensions 1.5 × 1.1 × 0.4 cm