Interface for Outside Light Sensor, MDRC
ABB HS/S4.2.1

Interface for Outside Light Sensor, MDRC

Product code: HS/S4.2.1
The device can be used as a twilight switch (1 ... 100 lux) or as a light value switch (100 ... 20.000 lux). One Outside Light Sensor LFO/A 1.1 is supplied with the device.
Price (Excluding GST)


The ABB HS/S4.2.1 measures the brightness with 1, 2 or 3 external data bus sensors. The measured values can be sent to the bus.= or evaluated internally.

One LFO/A is included with the HS/S 4.2.1.

 The Outside Brightess Sensors can be evaluated separately or in common (maximum value). 

Manual operation with backlighted display and text oriented user menu (6 languages: DE, EN, FR, ES, IT, NL)

Extensive evaluation functions of the sensor values:

  • 10 threshold channels for switching
  • 4 universal threshold channels
  • 6 universal logic channels (AND, OR, XOR)

Technical Details


  • Operating Voltage: 110...240VAC
  • Power Consumption: 1W at 230VAC
  • Bus Voltage: KNX Bus 21...30VDC
  • Bus Current Consumption: 10mA
  • Brightness measuring range: 1 - 100000 LUX
  • Max. cable cross section: 2.5 mm2
  • Cable length: 100 m (YCYM 2 x 2 x 0.8 mm 2 pairs for DATA bus) 50 m (YCYM 2 x 2 x 0.8 mm 1 pair each for KNX and DATA bus)
  • Max. number of connectable brightness sensors on DATA bus: 3



Brand ABB
Technology KNX
Mounting DIN Rail
Input voltage 230VAC
IP rating IP20
Mounting Width 3MW
EAN 40 16779 90672 2
brand ABB

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