Description:  CJMCU-811 CCS811 Indoor air quality monitoring digital gas sensor.  The CJMCU-811 is an ultra-low-power digital gas sensor that integrates a CCS801 sensor and an 8-bit MCU with an analog-to-digital converter (ADC) to detect indoor air quality, including carbon monoxide (CO) and a wide range of Volatile Organic Compounds (VOCs).  Air quality sensor CCS811 Features:  Ultra-low power consumption can be used in battery-operated equipment.  High sensitivity, fast heating.  The intelligent algorithm calculates TVOC / eCO2 values.  Output I2C signal, direct communication with the main system.  The main features of the air quality sensor CJMCU-811:  Metal oxide (MOX) sensors for monitoring indoor air quality An 8-bit MCU is integrated to run the first-level algorithm Integrated 12-bit ADC for sensor readings and digitized conversions I2C slave interface can be directly connected to the host system Reset / interrupt control.  Package included:  1 x CJMCU-811 CCS811 Carbon Monoxide CO VOCs Air Quality Digital Gas Sensor