ZigBee Hub Required: This smart air quality detector needs to work with ZigBee 3.0 gateway (not included), gateway transmission via ZigBee solution will be faster between gateway and smart device. Currently accessible devices support more than 30 to 50, which is sufficient for small homes or apartment buildings. New Smart Air Box: Smart air box is the smart home device for remote air environment monitoring, it can also detect formaldehyde, VOC toxic gas. , CO2, temperature, humidity, etc. 5 types of environmental parameters. Monitoring and review range of five parameters: The detection range of the intelligent 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 den composition changes and real-time reporting to your smart phones with supported Smart Life Tuya APP. View recording history in the app for smart controls on your home's temperature and humidity. Monitor your home's air conditioning, wherever you are. Smart Link: After pairing with the APP, it can be linked with various smart home products. For example, upon detecting excess 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. (Does not include other Tuya smart products)