This state-of-the art measurement instrument is engineered designed to the highest stards to assure you uncompromisingThis instrument will measurements of wind speed and direction, wind , temperatureandhumidity.All maximumminimum data can be recded displayed. In addition, the time of recded 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 wind direction display. Average wind speed gusts display. The units can be set as ms,kmh,mph,knots ( setting). Wind speed range: 0 to 50 ms; Wind direction range:E,S,W,N,SE,NE,SW,NW.Specification:Outdo Temperature range:Alkaline batteries: -4F to 140F (-20C to 60C)Lithium batteries: -40F to 140F (-40C to 60C);Resolution (f both indooutdo temperature): 2F1CTemperature accuracy: 2F1CHumidity range: 20% to 90%Humidity accuracy:5%Receiver: Alkaline battery: 2 AAA 1.5VWind Gauge Remote Sens: Alkaline battery: 2 AA 1.5V AA lithium battery(Not Included)Battery life: 12 months (.)Calendar:The hour display can be set between 12 hour 24 hour .The time zone can be set from-12 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: YYYY-MM-DD, MM-DD- YYYY,DD-MM-YYYY ( setting).Wireless 433 MHZ receiving. Available distance: 328 ft in open field.While receiving RF, press any key to quit.Indooutdo 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: Plasticcolour: WhitePackage Contents:1 x Professional Wireless1 x ReceiverOnly the above package content, other are not included.Note: Light reflection different displays may cause the col of the item in the a little different from the real thing. The measurement allowed err is 1-3cm.