Operating temperature: -20--85℃ Operating voltage (rated): 4.8-12V Working current: 10-496mA p> Size: 90*90*35mm Power supply mode: USB 5V/1A Communication protocol: Wi-Fi 2.4GHz p> Formaldehyde: 0-10.0 (mg/m3) VOC: 0-99.9 (ppm) Carbon dioxide: 0-1000 (ppm) ) Temperature: 0-60 (℃) Humidity: 0-95 (%) After pairing with APP, various home products intelligent can be linked. For example, when formaldehyde/VOC is detected to exceed the standard, the smart air purifier will automatically turn on; when the carbon dioxide exceeds the standard, the intelligent cool fan will automatically turn on; when the temperature is abnormal, the air conditioner the temperature will be automatically adjusted; when the humidity is too low or too high, the smart humidifier will be automatically turned on/off; when it is detected that a certain parameter exceeds the standard, an alarm message will be sent (the above intelligent linkage functions need to cooperate with smart home products) New Smart Air Box: smart air box is the home intelligent device for remote monitoring of air environment, it can also detect formaldehyde, toxic gas VOC, CO2, temperature, humidity and so on 5 kinds of environmental parameters.< /p> 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) Delivered quantity: 1 piece