Lufft – WS303-UMB Smart Weather Sensor

Compact all-in-one weather sensor for measurement of temperature, relative humidity, air pressure and radiation.







From the WS product family of professional intelligent measurement transducers with digital interface for environmental applications. Integrated design with ventilated radiation protection for measuring: Air temperature, relative humidity, radiation and air pressure. One external temperature or rain sensor is connectable.

Temperature, relative humidity, radiation and air pressure
NTC/T, Capacitive/RH, Tiltable Pyranometer Kipp&Zonen/Radiation, MEMS capacitive/Pressure
Compact all-in-one weather sensor, low power, heater, aspirated radiation shield, maintenance-free operation, open communication protocol
RS485, 2-wire, half-duplex


Advantages of the Smart Weather Sensor WS303

All-in-one housing concept of a compact weather sensor combining several measurement parameters in one housing with only one cable connection

  • Integrated Kipp & Zonen CMP3 Pyranometer, which is suitable
  • Built-in data pre-processing, universal interfaces and selectable output protocols
  • Compatible with many commercially available Met/HydroMet dataloggers and PLS systems thanks to an open communication protocol
  • Maintenance-free operation – no moving parts that can wear out
  • Suitable for all climate zones; also for solar-powered automatic meteorological stations
  • Ventilated temperature and humidity measurement according to WMO guidelines
  • Integrated heater that can be switched on if there is danger of frost

Examples of use:

  • PV-Monitoring / Solar Monitoring on photovoltaic farms
  • Hydro-meteorological stations
  • Meteorological reference stations
  • Integration into various other systems/solutions, where these measurement parameters are needed…



Additional information


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