Aqara TVOC Air Quality Monitor detects TVOC in the air, temperature and humidity. Along with Aqara's Zigbee 3.0 hub, such as, Aqara Hub M2, Aqara Camera Hub G2H, it works with other smart home accessories to implement various smart scenarios. For example, if the TVOC level exceeds the set value, a notification can be sent to you and the air purifier automatically turns on. Aqara hub is required.