17
DVR
If we parallel connected the sensor, the DVR can not recognize the triggered sensor. User need to have a resistance.
2. Alarm output connection:
The alarm output side is normal-off and do not have voltage output. The other alarm equipments (loudspeaker, light, alertor) need the individual power supply.
+12V GND Input1 Input2
DVR
NO/NC
+
-
C
NO/NC
+
-
C
NO/NC
+
-
C
Sensor1
Sensor3
Sensor2