Gravity ENS160 Air Quality Sensor DFRobot Gravity ENS160 Air Quality Sensor is based on ScioSense's ENS160 sensor chip. It's designed for indoor air quality monitoring and offers detection of multiple IAQ data (TVOC, eCO2, AQI). The innovative TrueVOC™ technology combines the metal oxide (MOX) technology that brings this sensor superior accuracy, fast response, and anti-interference.