Lantech IES-5222T Series, User Manual

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72V model:
The power input voltage can be from
50.4V to 90VDC to feed power on both
802.3af/at standardized devices.
Please make sure that the external power supply unit you use to
provide the PoE voltage meet the following criteria:

The output voltage of power supply must exceed 48VDC for 802.3af
and 53VDC for 802.3at operation (*with IPES-5222T-8-72V, only
72VDC can power both the 802.3af and 802.3at PD.)

The power consumption can satisfy the total power request from all
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.