Product Description      Suitable for construction, steel foundries, brick factories, glass facilities, boiler rooms, etc      Specifications      Wind Speed Range: 0.7~30m/s      Accuracy of Wind Speed: ±5% Digit            Material: ABS+Metal      Color as shown      Resolution: 0.1m/s      Wind Speed Unit Selection: m/s, Ft/min, Knots, km/h, Mph      Temperature range: 0~50& 8451;      Accuracy of temperature range: +/-0.6& 8451;      Resolution: 0.1& 8451;      WBGT Alarm      Press the MODE button to turn on WBGT alarm. Combining the data of the hazard level table to judge whether the temperature is too high.      Backlit Screen      When WBGT alarms, the backlight color changes to red.      Note: if the backlight is not turned on during the alarm, the backlight      of the LCD will still be red.      Low Battery Indicator      When the battery symbol appears on the LCD, it means the battery is low.      Product Features:      Humidity      Heat index      Wind Speed      Ambient Temperature      Black Ball Temperature            Package Contents:      1 x Screwdriver      2 x 5V AAA Batteries      1 x 881W Digital Anemometer            Only the above package content, other products are not included.      Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.