7Semi SCD43 CO2, Temperature and Humidity Sensor Breakout I2C Mini

Resources:

SCD43 Datasheet

Sensirion I2C SCD4x Arduino Library
DXF Files
STEP Files

7Semi Compact SCD43 CO2, Temperature and Humidity Sensor Breakout with I2C Interface
The 7Semi SCD43 CO2, Temperature and Humidity Sensor Breakout Mini is a compact environmental-sensing module based on Sensirion’s SCD43. It combines direct CO2 measurement with integrated temperature and relative-humidity sensing, making it suitable for indoor air-quality monitors, HVAC controls, smart-building systems, IoT devices, thermostats, and space-constrained embedded applications. The SCD43 uses PASens photoacoustic NDIR technology and provides a CO2 output range of 040,000ppm. Its specified CO measurement accuracy is +-(30ppm + 3% of reading) across the 4005,000ppm specified measurement range.
The Mini breakout communicates through I2C and accepts a 2.45.5V supply, allowing operation from common 3.3V and 5V embedded systems. It supports automatic self-calibration (ASC), forced recalibration (FRC), periodic measurement, low-power operation, and single-shot measurements. At only 20 20 7.5 mm, the board provides the SCD43 sensing functions in a smaller footprint than the larger 7Semi SCD43 breakout.
Key Features

Three Environmental Measurements: Measures CO concentration, temperature, and relative humidity
True CO Measurement: Uses Sensirion PASens photoacoustic NDIR technology
Wide CO Output Range: Provides output values from 040,000ppm
Specified CO Range: Accuracy specified from 4005,000ppm
High CO Accuracy: +-(30ppm + 3% of measured value) from 4005,000ppm
IC Interface: Digital communication for straightforward embedded integration
Automatic Self-Calibration: ASC supports long-term CO2 measurement stability under suitable operating conditions
Forced Recalibration: FRC enables recalibration against a known CO2 reference
Single-Shot Mode: Supports on-demand measurements for low-duty-cycle applications
Temperature Sensing: Typical 0.8C accuracy from 15C to 35C
Humidity Sensing: Typical 6%RH accuracy under specified conditions
Wide Supply Range: Operates from 2.45.5V
Compact Mini PCB: Measures only 20 20 7.5 mm
Factory-Calibrated Sensor: Calibration certificate can be requested using the sensor serial number

Applications

Indoor air-quality monitors
HVAC ventilation control
Smart thermostats
Smart-building systems
Demand-controlled ventilation
IoT environmental monitors
Office and classroom CO monitoring
Air purifiers
Building-management systems
Environmental data loggers
Compact embedded sensing systems
Battery-powered monitoring devices

SCD4X CO2 Measurement SensorPinout Reference Guide

Calibration Certificate
A calibration certificate is available for the sensor. To request the certificate, please email us the sensor serial number, and we will share the corresponding calibration certificate.
Package Includes:

1x7Semi SCD43 Breakout Board (ES-12295-v1)
1xPin Header