LCD display also shows wind speed and temperature. Use 9V battery, with automatic shutdown and battery low voltage directives

specifications:
Battery features:
Battery voltage: 9V battery, the normal life of about 100 hours.
Battery current: standby time is not power.
          When the buzzer will turn calls out that boot successfully.
Automatic Shutdown: In the start position, 10 minutes, not pressed any button that automatically shut down.
Anemometer Dimension: 183mm (L) * 76mm (W) * 45mm (H)
LCD display Size: 43.3mm * 36.5mm
Fan diameter: 73mm (2-7/8 ")
Use environment: Temperature -10 °C ~ 50 °C, relative humidity 30% ~ 85%
Preservation of the environment: Temperature -20 °C ~ 70 °C, relative humidity 25% ~ 95%

LCD display also shows wind speed and temperature. Use 9V battery, with automatic shutdown and battery low voltage directives