Samsung SND-5011 User Manual page 27

to connect to the alarm input port
Connect the alarm input cable to the corresponding port.
SENSOR
Port Description Port Description
ALARM IN GND
Alarm Input Sensor Port GND port for the sensor
to connect the external sensor
Connect one strand of each signal line (2-strand) of the sensors to the [aLarm in] port,
and connect the other strand to the [GnD] port.
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