The Lufft WS601-UMB is a product of the "WS" compact weather station family. The compact weather stations are intelligent, digital sensors for various meteorological applications. The WS601-UMB with forced ventilated weather cabin measures air temperature, relative humidity, precipitation, air pressure, wind direction and wind speed. The tipping bucket measures 0.2 or 0.5 mm of rain per pulse. The integrated ultrasonic wind sensor measures the wind direction and wind speed without moving parts. Optionally, one external temperature sensor can be connected.