This state-of-the-art measuring instrument is designed and manufactured to the highest standards to ensure you no compromise. The instrument will measure wind speed and direction, wind, temperature and humidity. All maximum/minimum data can be recorded and displayed. In addition, the time the data was recorded can be displayed. Weather alarms can be set individually and any value can be set. The alarm signal lasts for 2 minutes. Wind speed and direction display. Average wind speed and gusts display. Units can be set to 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. Specifications: Outdoor Temperature Range: Alkaline Battery: -4F to 140F (-20C to 60C) Lithium Battery: -40F to 140F (-40C to 60C); Resolution (Indoor/Outdoor Temp): 2F/1C Temperature Accuracy: 2F/1C Humidity Range: 20% to 90% Humidity Accuracy: 5% Receiver: Alkaline Battery: 2 AAA 1.5V Anemometer Remote Sensor: Alkaline Battery: 2 AA 1.5V or AA Lithium Battery (Not Included) Battery Life: 12 Months (.) Calendar: Hour display can be set between 12 hours or 24 hours. Time zone can be set from -12 to +12 (setting). Daylight Saving Time automatically adjusts (Daylight Saving Time adjusts for different time zones). Date display can be set to: YYYY-MM-DD, MM-DD- YYYY, DD-MM-YYYY (setting). Wireless 433 MHZ reception. Usable distance: 328 feet in open area. When receiving RF, press any key to exit. Indoor/outdoor relative humidity (RH %) display. Display range: 20% to 99%. Resolution: 5%. Wind temperature display. Display unit: F / C (setting). Dew point temperature display. Display unit: F / C (setting). Material: Plastic Color: White Package Contents: 1 x Professional Wireless 1 x Receiver Only the above package contents, others are not included. Note: Light reflection and different displays may cause the color of the item to be slightly different from the actual item. The measurement allowable error is +/- 1-3 cm.