Functions of the multifunctional 433 wirel mission thermometer and hygrometer:1. Indoor and outdoor temperature and humidity display2. Memory function of the highest and lowest temperature and humidity within 24 hours3. Backlight (touch and turn off for 10 seconds, plug in and it can stay on)4. Air pressure5. Channel search/switch;6. Bracket, can be placed on the table;7. Hanging hole, can be hung;8. Weather forecast (predict the weather change trend in 24 hours)9. Power supply method: Receiver: pluggable (Type-C charging cable) 3 * AAA battery(regular shipment does not include battery), mitter: 2 * AA battery(regular shipment does not include battery)10. Low power reminder11. C/F switch (default F when powered on)12. Connect up to 3 mitters (regular package comes with three mitters)13. Temperature and humidity change trend indication 14. Wirelreceiving range: 328ft/100m (open space), receiving frequency: 433MHz. The actual receiving distance is subject to the actual use scenario15. The mitter is waterproof, waterproof level: IP4, can be exposed to rain16. Humidity comfort reminder function17. 24-hour temperature and humidity maximum and minimum value recordingParametersIndoor temperature measurement range: 14F-122F(-10C-50C)Outdoor temperature measurement range: -40F-158F(-40C-70C)Temperature resolution 0.1C/FTemperature accuracy: 1C/1.8FHumidity range: 20%-95%Humidity resolution: 1%Humidity accuracy: 5%RH (within 30%-70%RH range)Temperature display unit: C/F optionalcolour:BlackMaterial:ABSTips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect UsePackage Contents:1 * WirelWeather Station Barometer setOnly the above packa