Indoor Temperature and Humidity:1. Temperature measurement range: -9~60 (16 ~ 140 ) 2. Temperature measurement error: 1C (at0 to 40C), 2C (at40 to 60C) 3. Humidity measurement range: 20% ~ 95% (when the temperature is lower than 20%, LL is displayed; When it is higher than 95%, display HH) 4. Humidity measurement error: 5%RH (at15 to 40, 40 to 80); 5. Detection cycle: 10 seconds Indoor Environment Status Prompt:1. DRY: Any temperature and humidity le than 29%, the arrow automatically points to the DRY orange icon; 2. COMFORT: When the temperature is between 18C and 26C and the humidity is between 30% and 69%, the arrow automatically points to the COMFORT green icon; 3. WET: At any temperature, when the humidity is greater than or equal to 70% to 95%, the arrow automatically points to the WET blue icon. Specification:Product name: Thermometer and Hygrometer Power supply mode: No. 7 battery 1.5v*2 (not included) Material: ABS Fixing method: bracket/magnet Packing List:Thermometer and Hygrometer*1 User Manual *1 Note:1. When the temperature is lower than -10 (-14), it will display LL ; when it is higher than 60 (-140), it will display HH; 2. Long pre/key to clear the current maximum and minimum temperature/humidity.