SCD30

SCD30

Manufacturer:: SENSIRION

SENSIRION SCD30 Integrated CO₂, Temperature & Humidity Sensor Module

Specifications

Product Introduction

This sensor module integrates NDIR CO2 measurement technology with a best-in-class humidity and temperature sensor on the same module. It enables accurate and stable monitoring of carbon dioxide, humidity, and temperature for indoor air quality applications. The small form factor and digital interfaces allow for easy integration into various devices.

Features

  • NDIR CO2 sensor technology
  • Integrated temperature and humidity sensor
  • Best performance-to-price ratio
  • Dual-channel detection for superior stability
  • Small form factor: 35 mm x 23 mm x 7 mm
  • Measurement range: 400 ppm – 10,000 ppm
  • Accuracy: ±(30 ppm + 3%)
  • Current consumption: 19 mA @ 1 meas. per 2 s
  • Fully calibrated and linearized
  • Digital interface UART or I2C

Applications

  • Indoor air quality monitoring
  • HVAC systems and ventilation control
  • Smart home and building automation
  • Energy efficiency optimization
  • Health and well-being improvement in living spaces

Specifications Table

CO2 measurement range (I2C, UART) 0 – 40,000 ppm
CO2 measurement range (PWM) 0 – 5,000 ppm
Accuracy (400 ppm – 10,000 ppm) ± (30 ppm + 3%MV)
Repeatability (400 ppm – 10,000 ppm) ± 10 ppm
Temperature stability (T = 0 … 50°C) ± 2.5 ppm / °C
Response time (τ63%) 20 s
Accuracy drift over lifetime ± 50 ppm
Humidity measurement range 0 %RH – 100 %RH
Humidity accuracy (25°C, 0 – 100 %RH) ± 3 %RH
Humidity repeatability ± 0.1 %RH
Humidity response time (τ63%) 8 s
Humidity accuracy drift < 0.25 %RH / year
Temperature measurement range -40°C – 70°C
Temperature accuracy (0 – 50°C) ± (0.4°C + 0.023 × (T [°C] – 25°C))
Temperature repeatability ± 0.1°C
Temperature response time (τ63%) > 10 s
Temperature accuracy drift < 0.03 °C / year
Average current (update interval 2 s) 19 mA
Max. current (during measurement) 75 mA
DC supply voltage 3.3 V – 5.5 V
Interface UART (Modbus Point to Point; TTL Logic), PWM and I2C
Input high level voltage (I2C) 1.75 V - 3.0 V
Input high level voltage (Modbus) 1.75 V – 5.5 V
Input low level voltage (I2C/Modbus) 0.3 V – 0.9 V
Output low level voltage (I2C/Modbus, IO = +8 mA) 0.4 V
Output high level voltage (I2C/Modbus, IO = -6 mA) 2.4 V

To learn more, please download the PDF.

Datasheet: