SCD30 - sensor module for HVAC system and indoor air quality monitoring CMOSens for IR detection Technology helps to achieve high-precision CO2 measurement at competitive prices. diverse sensor products and algorithms make the temperature and humidity sensor better integrated, while the small size makes it easier to integrate this product into different applications.Carbon dioxide is a key indicator of indoor air quality. Due to new energy standards and better insulation, houses have become more and more energy-efficient, but air quality is deteriorating .In order to improve health and productivity, a comfortable and healthy indoor environment can be maintained through automatic air change.sensor solutions provide accurate and stable CO2 and temperature and humidity monitoring, enabling customers to develop new solutions to improve energy efficiency and human health. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Color:As Shown Material:plastic Package Contents: 1 * SCD30 Air quality sensor module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.