Lantech IGS-5008T Series, Руководство пользователя

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PD devices required.
Non-PoE model (M12) PoE model (M23)
Pin assignment of Power input

Dual Power Input
The power input can be supported redundantly. The supply voltage is
electrically isolated from the housing.
Note: With single power supply of the mains voltage, the device will
report a power failure. You can disable this power fail event via web
browser.
Pin assignment of alarm relay
A break in contact is reported via the relay contact :

The failure of at least one of the two supply voltages.

The break link status of at least one switch port.