This measurement instrument is engineered and designed to standards to assure you uncompromising This instrument measures wind speed & direction, wind chill, temperature&humidity. All maximum/minimum data can be recorded and displayed. In addition, the time of recorded data can be displayed as well. 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 user defined 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 Battery life: 12 months. Calendar: The hour display can be set between 12 hour or 24 hour format. The time zone can be set from -12 to +12 user defined 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 user defined 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 chill temperature display. Display units : F / C user defined setting. Dew point temperature display. Display units : F / C user defined setting. Material: Plastic Colour: White Package Contents: 1 x Professional Wireless Weather Station 1 x Receiver