Features: The ENS160+AHT21 sensoring combines advanced CO2, eCO2, vocs , and TVOC detection with temperature and humidity monitoring, delivering precise, real time air quality assessment for indoor environment. Featuring low power design, and compatibility for microcontrollers, this sensoring offers seamlessly integration and replaces the CCS811 without hardware modifications. Ideal for DIY enthusiasts, intelligent home developers, and industrial engineers reliabled environmental monitoring solution. Perfect for home automation, HVAC systems, agricultural controls, and projects requiring accurate air quality and climate data. Easy installation in space constrained setups, while its high resistance to humidity and silicone ensures long time reliability. Specifications: ENS160 ENS160+AHT21 Air Quality And Temperature And Humidity sensoring for CARBON Dioxide CO2 eCO2 TVOC Replace CCS811 Size: about 25.3x20mm/1x0.79in Support I2C Package Includes: 1Set ENS160+AHT21 Sensoring Module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.