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Key features


  • All-in-one housing concept of a compact weather sensor combining several measurement parameters in one housing with only one cable connection
  • Built-in data pre-processing, universal interfaces and selectable output protocols
  • Maintenance-free operation – no moving parts that can wear out
  • Compatible with many commercially available Met/HydroMet data loggers and PLS systems thanks to an open communication protocol
  • Suitable for all climate zones; also for solar-powered automatic meteorological stations
  • Ventilated temperature and humidity measurement according to WMO guidelines


The WS300-UMB Compact Weather Station for measuring of air temperature, relative humidity and air pressure. Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. Measurement output can be accessed by the following protocols: UMB-Binary, UMB-ASCII, SDI-12, MODBUS.

Lufft WS300-UMB Smart Compact Weather Station

Excluding VAT
  • Temperature

    Principle NTC
    Measuring Range -50...60°C
    Accuracy ±0,2°C (-20°C...+50°C), otherwise ±0.5°C (>-30°C)

    Relative Humidity

    Principle Capacitive
    Measuring Range 0...100% RH
    Accuracy ±2% RH

    Air pressure

    Principle MEMS Capacitive
    Measuring range 300…1200hPa
    Accuracy ± 0.5 hPa (0...+40°C)

    General Information

    Protection type housing IP66
    Interface RS485, 2-wire, half-duplex
    Operating Power Consumption 12-24 VDC ±10%
    Operating Humidity Range 0...100%
    Operating Temperature Range -50...60%°C
  • 5-6 Weeks

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