KNX LW sl

Brightness/wind sensor for KNX

The Brightness and Wind Sensor KNX LW sl for the KNX building bus system measures brightness and wind speed.
All values can be used for the control of limit dependent switching outputs. States can be linked via AND logic gates and OR logic gates. Multi-function modules change input data as required by means of calculations, querying a condition, or converting the data point type.
The compact housing of the KNX LW sl accommodates the sensors, evaluation circuits and bus-coupling electronics.


  • KNX LW sl (70164) KNX LW sl (70164)
  • Brightness: The current light intensity is measured by a sensor
  • Wind measurement: The wind strength is measured electronically and thus noiselessly and reliably, even during hail, snow and sub-zero temperatures. Even turbulent air and rising winds in the vicinity of the device are recorded
  • Switching outputs for all measured and computed values. Threshold values can be adjusted per parameter or via communication objects
  • 8 AND and 8 OR logic gates, each with 4 inputs. All switching events as well as 16 logic inputs (in the form of communications objects) can be used as inputs for the logic gates. The output of each gate can be configured optionally as 1-bit or 2 x 8-bit
  • 8 multi-function modules (computers) for changing the input data by calculations, by querying a condition or by converting the data point type. Configuration is made using the KNX software ETS.
Housing Plastic
Colour White / Translucent
Assembly Surface mount
Protection category IP 44
Dimensions approx. 62 × 71 × 145 (W × H × D, mm)
Weight approx. 85 g
Ambient temperature Operation -30…+50°C, storage -30…+70°C
Auxiliary supply 12…40 V DC, 12…28 V AC.
Auxiliary current at 12V DC: max. 185 mA
at 24V DC: max. 90 mA
at 24V AC: max. 82 mA
Bus current max. 10 mA
Data output KNX +/-
Communication objects 303
Measurement range wind sensor 0 m/s … 35 m/s
Measurement range brightness sensor 0 lux … 150,000 lux
made in germany