LevelOne IFE-0502 - Manual (Page 13)

Wiring the Fault Alarm Contact
The fault alarm contact is in the middle of terminal block connector as the picture
shows below. When the wires are inserted into ports 3 and 4, they automatically
detect the fault status in the event of a power failure by forming an open circuit.
An example for the fault alarm contact is shown as below:
Insert the wires into the fault alarm contact.
The wire gauge for the terminal block should be in the range
between 12 ~ 24 AWG.
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