This stateofthe art measurement instrument is engineered and designed to the highest standards to assure you uncompromising This instrument will measurements of wind speed and direction, wind , temperatureandhumidity. All maximum/minimum data can be recorded and displayed. In addition, the time of recorded data can be displayed as . The weather alarm can be set separately, any value can be set. The alarm signal lasts 2 minutes. Wind speed and wind direction display. Average wind speed and gusts display. The units can be set as m/s,km/h,mph,knots or ( setting). Wind speed range: 0 to 50 m/s; Wind direction range:E,S,W,N,SE,NE,SW,NW. Specification: Outdoor Temperature range: Alkaline batteries: 4F to 140F (20C to 60C) Lithium batteries: 40F to 140F (40C to 60C); Resolution (for both indoor/outdoor temperature): 2F/1C Temperature accuracy: 2F/1C Humidity range: 20% to 90% Humidity accuracy:5% Receiver: Alkaline battery: 2 AAA 1.5V Wind Gauge Remote Sensor: Alkaline battery: 2 AA 1.5V or AA lithium battery(Not Included) Battery life: 12 months (.) Calendar: The hour display can be set between 12 hour or 24 hour . The time zone can be set from12 to and12( setting). Daylight saving time is adjusted automatically (The daylight saving time is adjusted on the basis of different time zone). The date display can be set as: YYYYMMDD, MMDD YYYY,DDMMYYYY ( setting). Wireless 433 MHZ receiving. Available distance: 328 ft in open field. While receiving RF, press any key to quit. Indoor/outdoor relative humidity (RH %) display. Display range: 20% to 99%. Resolution: 5%. Wind temperature display. Display units : F / C ( setting). Dew temperature display. Display units : F / C ( setting). Material: Plastic colour: White Package Contents: 1 x Professional Wireless 1 x Receiver Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 13cm.