CO2, humidity and temperature sensing module for air quality monitoring

Mouser is shipping a CO2 sensor for air quality monitoring that is “ideal for applications that must meet standards like California’s Title 24, RESET Grade B, WELL, UBA and ASHRAE 62.2”, it said.

Made by Renesas, the single-channel, non-dispersive infra-red module is called RRH47000 and has automatic baseline calibration for measurement from 0 to 5,000ppm.

Also in there are temperature and humidity sensors, and a microcontroller to communicate the readings.

Relative humidity is measured to ±3.5% and operation is over -10 to + 50°C.

The component distributor is also offering the associated evaluation kit, RRH47000-EVK, including Renesas’ ESCom general-purpose sensor interface, which has a USB-C interface for computers running associated evaluation software, and a daughter board carrying the CO₂ sensor.

“The software GUI simplifies sensor data visualisation and supports all operational methods for Renesas environmental and flow sensors,” said Mouser.

ESCom also has a female PMOD connector for connecting additional sensors via I²C, and a male PMOD connector for communication with some of Renesas’ microcontroller evaluation kits.

Applications are foreseen in air-conditioning, demand-controlled ventilation, and in appliances.

Mouser’s RRH47000 web page
Mouser’s RRH47000 eval kit page

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Steve Bush

Steve Bush is the long-standing technology editor for Electronics Weekly, covering electronics developments for more than 25 years. He has a particular interest in the Power and Embedded areas of the industry. He also writes for the Engineer In Wonderland blog, covering 3D printing, CNC machines and miscellaneous other engineering matters.