Features: 1.The display unit of indoor and outdoor temperature is Fahrenheit or Celsius (optional). Provide indoor and outdoor high / low temperature alarm settings. 2.High wind speed alarm setting: The user can adjust the high wind speed alarm setting in this mode.  3.Wind direction alarm setting: You can adjust the wind direction setting in this mode. 4.Wireless 433 MHz reception. Available distance: 328 ft (open area). When receiving RF, press any key to exit. 5.Time zone and time alert settings. The time zone can be set from 12 to + 12 (user setting).   Description:   1.Professional wireless anemometer. 2.433MHz and transmission range up to 100m.   Specifications:   Material: Plastic Color: White-Grey Size：66*120*22 mm Weight(KG)：0.42 KG Indoor temperature：0 ℃~60℃ Outdoor temperature：-40° C ~60 ° C Temperature accuracy：±1.0℃ Humidity:20%~99% Wind speed range:0~50m/s   Package Included:   1 set x Digital hygrometer and thermometer（1 Receiver+1 Transmitter) Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.