LEGRAND 4 305 21 User Manual page 18

Sensor Type Setup

If you want to use Alarm Input, the types of sensor must be selected. The sensor types are Normal Open and Normal.
 Normal Open
Output Voltage is high state when sensor is activated.
 Normal Close
Output Voltage is high state when sensor is not activated.
Pin No
ST1 (Pin 4)
ST2 (Pin 5)
ST3 (Pin 6)
ST4 (Pin 7)

If sensor type is not selected properly, the alarm can be activated reversely.
Switch State Sensor Type
ON Sensor 1 : Normal Close Type
OFF Sensor 1 : Normal Open Type
ON Sensor 2 : Normal Close Type
OFF Sensor 2 : Normal Open Type
ON Sensor 3 : Normal Close Type
OFF Sensor 3 : Normal Open Type
ON Sensor 4 : Normal Close Type
OFF Sensor 4 : Normal Open Type
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