CBC PT112N User Manual page 16

If you want to use Alarm Input, the type of sensor must be selected in OSD menu. The sensor types are
Normal Open and Normal Close. If the sensor type is not selected properly, alarm activation will occur
opposite of what is desired.
Normal Open
Normal Close
Speed Dome Camera Instruction Manual
Output Voltage is high state when sensor is activated
Output Voltage is high state when sensor is not activated
INSTALLATION
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