8
2.4 External Alarm In/Out Connection
Alarm Input Port:
G (GND): Connect the GND sensor
1 ~ 3 : Alarm Input supporting normally open or normally closed.
Alarm Output Port:
1 ~ : Relay Output
Alarm Output Connection
Please note the usage of jumper JJ1. If you use DC, either connection is okay. It is
suggested that you use 12vDC at less than 1 Amp.
If you use AC, ensure the jumper is opened. There are jumpers on the mainboard
corresponding with each alarm output. The default is closed.
WARNING: IF YOU USE AC FOR RELAY OUTPUT, ENSURE THE
RELEVANT JUMPER IS OPENED.