ZigBee Hub Needed: This Smart air quality detector needs to work with a ZigBee 3.0 Gateway (not included), gateway transmission via ZigBee solution, will be faster between gateway and smart device. The currently accessible devices support over 30-50, which is enough for small houses or apartment buildings. New Smart Air Box: smart air box is the smart home device for remote monitoring of the air environment, it can also detect formaldehyde, toxic gas VOC, CO2, temperature, humidity and so on 5 kinds of environmental parameters. Five Parameter Monitoring and Examination Scope: The detection range of the smart air box: formaldehyde, VOC gas, CO2, temperature, humidity. Formaldehyde: 0-10.0 (mg/m3); VOC: 0-99.9 (ppm); carbon dioxide: 0-1000 (ppm); Temperature: 0-60 (); Humidity: 0-95 (%). Data Storage: Real-time perception of Lair composition changes and real-time report to your smart phones with smart Life tuya App supported. View record history in App for smart controls for your home temperature and humidity. Monitor your home air conditioning no matter where you are. Smart Link: After being paired with the app, it can be linked with various smart home products. For example, when detecting excessive formaldehyde/VOC, the smart air purifier is automatically activated; Maximum Standard Alarm: When a certain parameter is detected to exceed the standard, a message will be sent to the alarm. (Not including other Tuya Smart Products)