Further information for ABB HS/S 4.2.1 - HS/S4 2 1 Outside Light Sensor Interface
The device can be used as a twilight switch (1,100 lx) or light value switch (100,100,000 lx). Up to 3 LFO/A 1.1 outdoor light sensors can be connected. One outdoor light sensor is included in the scope of delivery.