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This sensor module combines ENS160 air quality chip and AHT21 high-precision temperature and humidity sensor. It can simultaneously detect eCO2, TVOC concentration, ambient temperature and humidity. It is an ideal direct replacement for CCS811 sensor with improved stability and detection precision. Small size and simple wiring design, convenient for secondary development and embedded application. Suitable for smart home devices, indoor air quality detectors, environmental monitoring stations and various intelligent sensing DIY projects.