SKU: SENS-0812
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Sensirion SCD41-D-R2 CO₂ Gas Sensor, Range: 400 ppm~5000 ppm, I2C Interface, LGA-20 Package

₹1,949.00 (Inclusive of all taxes)
Out of Stock

The Sensirion SCD41-D-R2 is a high-precision, second-generation CO₂ sensor module featuring an integrated SHT4x for temperature and humidity compensation. It communicates via I2C and is designed for seamless integration into 3.3V or 5V digital systems, including Arduino, Raspberry Pi, and ESP32 platforms, for accurate environmental monitoring.

Features

  • High-accuracy CO₂ measurement from 400 ppm to 5000 ppm (±5%).
  • Integrates Sensirion’s PASens® photoacoustic NDIR and CMOSens® technology.
  • On-chip signal compensation via built-in SHT4x temperature and humidity sensor.
  • Wide operating voltage range from 2.4V to 5.5V with I2C digital interface.
  • SMD-compatible LGA-20 package for space-constrained and portable designs.

Out of stock

Description

The SCD41-D-R2 represents Sensirion’s advanced second-generation CO₂ sensing platform. It utilizes a photoacoustic Non-Dispersive Infrared (NDIR) principle, enhanced by proprietary PASens® and CMOSens® technologies, to deliver stable and accurate readings in a miniaturized form factor. This approach eliminates the need for traditional optical components, reducing size and power consumption.

The module includes a fully integrated SHT4x sensor for precise temperature and humidity measurement, enabling on-chip environmental compensation that ensures high data integrity across varying conditions. Its SMD-compatible LGA-20 package and wide 2.4V to 5.5V supply range make it ideal for direct integration into battery-powered, portable devices and complex digital systems requiring reliable air quality data.

Key Features

  • Second-generation photoacoustic NDIR CO₂ sensor with ±5% accuracy.
  • Patented PASens® and CMOSens® technology for robust, miniaturized design.
  • Integrated SHT4x sensor provides automatic temperature and humidity compensation.
  • Digital I2C interface ensures easy connection to microcontrollers and SBCs.
  • Wide operating voltage range (2.4V to 5.5V) supports 3.3V and 5V logic systems.
  • SMD (LGA-20) mounting style enables cost-effective, space-saving PCB integration.
  • Extended operational temperature range from -40°C to +85°C.
  • Optimized for low-power applications and long-term stability.

Applications

  • Demand-controlled ventilation (DCV) systems in smart buildings.
  • Indoor air quality (IAQ) monitoring in HVAC and portable air purifiers.
  • Occupancy detection and wellness monitoring in wearable devices.
  • Agricultural and horticultural CO₂ level management in greenhouses.
  • Portable environmental data loggers and personal CO₂ monitors.

Technical Specifications

Manufacturer Part NumberSCD41-D-R2
Sensor TypeCarbon Dioxide (CO₂)
Measurement Range400 ppm to 5000 ppm
Accuracy±5%
Communication InterfaceI2C
Supply Voltage2.4V to 5.5V
Operating Temperature-40°C to +85°C
Mounting StyleSMD/SMT
Package / CaseLGA-20
Key TechnologyPhotoacoustic NDIR (PASens®), CMOSens®
Integrated SensorsTemperature & Humidity (SHT4x)

Frequently Asked Questions

What is the operating voltage range for the SCD41-D-R2 sensor?

The SCD41-D-R2 operates from 2.4V to 5.5V DC, making it compatible with both 3.3V and 5V microcontroller systems like Arduino, ESP32, and Raspberry Pi without requiring a level shifter.

How do I communicate with this sensor, and what is the pinout?

Communication is via a standard I2C interface. The LGA-20 package pins include VDD (power), GND (ground), SDA (data), and SCL (clock). Consult the Sensirion datasheet for the complete pinout diagram and recommended PCB footprint.

Does the sensor require calibration, and what is its accuracy?

The sensor is factory calibrated and typically does not require user calibration for standard applications. It provides CO₂ concentration measurements with a stated accuracy of ±5% over its 400 ppm to 5000 ppm range, supported by its integrated SHT4x sensor for environmental compensation.

What is the difference between the SCD4x series and previous CO₂ sensors?

The SCD4x series uses Sensirion's second-generation photoacoustic (PASens®) technology, which is more compact and power-efficient than traditional NDIR sensors. It integrates the sensing element, detector, and a complete SHT4x sensor on a single CMOS chip (CMOSens®), enabling a smaller form factor and on-chip signal processing.

Package Includes

  • 1 x Sensirion SCD41-D-R2 CO₂ Gas Sensor Module

Additional Information

Weight 0.05 kg
Dimensions 1.5 × 1.1 × 0.4 cm