CO2 GAS Sensor – SCD41
Compact, high-precision sensor for monitoring CO₂, temperature and humidity, ideal for home automation projects, weather stations and IoT systems based on Arduino, ESP32 and Raspberry Pi.
SKU 8300-SCD41EAN 8219671078139Product type: Accessories, Thermal imaging & temperatureSensors, Weather sensors
Description
The SCD41 is a high-precision CO₂ sensor based on NDIR (Non-Dispersive Infrared) technology, designed for monitoring indoor air quality.
It measures CO₂ concentration in a typical range of 400–5000 ppm, with high stability and accuracy. It also integrates temperature and humidity sensors, used for internal measurement compensation.
Communication takes place via the I2C bus (SDA/SCL), making it easy to integrate with microcontrollers such as Arduino, ESP32 and Raspberry Pi.
It operates with a 2.4–5.5 V power supply, compatible with 3.3V and 5V systems. Its low power consumption and compact form factor make it ideal for home automation and IoT applications.
Key features
- Measures real CO₂ with high precision
- Also detects temperature and humidity
- Simple, universal I²C communication
- Perfect for home automation and IoT
- Easy integration with microcontrollers
Connections

GND: Ground
SDA: I²C data line
SCL: I²C clock line
Technical details
| VDD | 2.4–5.5V |
|---|---|
| GND | Ground |
| SDA | I²C data line |
| SCL | I²C clock line |











