Easy to use and compact with good reading accuracy, this device measures and displays temperature and wind speed in various applications: ventilation, air conditioning, manufacturing processes, industry, etc. The wind speed reading is displayed on the top and the temperature reading on the bottom. A HOLD button allows you to maintain the current reading. Automatic power OFF after 20 minutes. Several measurement scales are available: Temperature in °C or °F and wind speed in m/s, km/h, mph, kts, and Beaufort. Powered by 3 AAA 1.5V batteries (included).