This Anemometer reads temperatures in °C or °F and has auto/manual power off to reserve battery life The Sealey TA070 Anemometer is a wind speed measuring device featuring live/max/average/wind chill and Beaufort scale. It is ideal for checking workshop dust/fume extraction devices. Features: Ideal for checking workshop dust/fume extraction devices Also reads temperature which can be measured in either °C or °F Readings are displayed on a 24mm high back-lit LCD screen Features a battery indicator and auto/manual power off Comes With: CR2032 3V battery Specification: Wind Speed Measurement: mtr/s, km/h, ft/min, knots, mph Wind Speed Accuracy: ±5% Temperature Range: -10 to +45°C/14 to 113°F