This state-of-the art measurement instrument is engineered and designed to the highest standards to assure you uncompromising This instrument will measurements of wind speed & direction, wind , temperature&humidity. 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 from-12 to +12( 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. 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 +/- 1-3cm.Products from GuanGuan's store