Grove CO2 / Temperature / Humidity Sensor for Arduino, SCD30 - 

The Grove SCD30 is a 3-in-1 Arduino sensor that can measure CO2, temperature, and humidity. Based on Sensirion SCD30, it is a Non-Dispersive Infrared(NDIR) carbon dioxide sensor with high precision and wide measurement accuracy which can reach ±(30 ppm + 3%) between 400ppm to 10'000ppm. It would be a perfect choice if you are not looking for a simple Arduino temperature sensor or a CO2 sensor, but a multifunctional sensor for your Arduino weather station or other environmental projects. Embedded with Sensirion SCD30, The Grove SCD30 integrates Non-Dispersive Infrared (NDIR) measurement technology for CO2 detection. It also has Sensirion humidity and temperature sensors on the same sensor module.