Mikroe HVAC 2 Click

Mikroe HVAC 2 Click is a compact add-on board for indoor air quality monitoring and smart HVAC control applications. The board is based on the Sensirion SCD43-D-R2 CO₂ sensor and uses photoacoustic NDIR sensing with PASens^® and CMOSens^® technologies for reliable indoor CO₂ measurement.

The board supports a specified CO₂ measurement range of 400ppm to 5000ppm and communicates with the host MCU via an I²C interface operating up to 400kHz. Mikroe HVAC 2 Click also includes integrated SHT4x-based humidity and temperature compensation, which helps improve measurement accuracy across changing environmental conditions and supports smart ventilation regulation for healthier and more efficient indoor spaces.

Additional flexibility comes from the Click Snap feature for movable sensor placement and an added header for connecting SEN5x or SEN6x modules to expand sensing of particulate matter, VOCs, NOx, and other environmental parameters. The Click board is ideal for IAQ monitors, smart ventilation controllers, HVAC optimization systems, connected building sensors, occupancy-based air quality systems, and environmental monitoring devices.

Features

Onboard SCD43-D-R2 CO₂ sensor for indoor air quality (IAQ) from Sensirion
CO₂ measurement range of 400ppm to 5000ppm
Accuracy of ±30.0ppm ±3.0% m.v.
Integrated SHT4x-based humidity and temperature compensation
Integrated humidity and temperature compensation based on SHT4x sensing
SEN5x/SEN6x expansion header support for extended environmental sensing

Enables extended air quality sensing of particulate matter, VOC, NOx, and other environmental parameters
Included jumper wire set with 6-wire to GHR-06V-S connection support
I²C interfaces
Click Snap and ClickID feature
mikroBUS™ compatibility
L (57.15mm x 25.4mm) click board size
3.3V or 5V input voltage