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15
DVR
DVR
+12V GND Input1 Input2
Sensor
NO/NC
+
-
C
Alarm output: Relay (240VAC/7A, 125VAC/10A, 28VDC/10A), normal (relay open), alarm output (relay close).
Sensor power: The machine provides a +12V DC power output port.
Introduce the 3 segment alarm connection as below, the difference between 2 segment alarm and 3 segment alarm is don’t need add resistance when use 2 segment alarm type.
1. Alarm sensor connection:
Alarm input: The physical connections of the normal on/off mode are the same. And user can select normal on/off mode in the DVR.
Note: The alarm input port which haven’t used should be closed in the DVR.
Typical alarm connection: the sensor power supply is provided by DVR. The fig is as follows: