eLine Technology ECO3 Alarm Instruction - Manual

Alarm connection instruction
The DVR support two alarm input mode(normal on/off)，these
two mode has the same external connection method but different
setting in host system. Choosing normal on/off mode by software
operation make it simple to user and below are the detail steps of
normal on mode setting.
1. Alarm external connection
Typical connection：the DVR host supply power to sensor.
We suggest sensor get power supply separately to avoid power supply
instability if there has a long distance between DVR and sensor. We suggest
connected both side GND together to stable the power supply as follows:
DVR
Probe
Probe
+12V GND IN 1 IN 2
+ - NO C
+ - NO C DVR
+12V GND IN 1 IN 2
+12V
Probe