PoE Adapter

Power over Ethernet (PoE) adapters allow to power LAN devices through typical transmission cable (FTP/UTP etc.)
It is very useful solution in the case of Access Points, where the AP can be placed in a hermetic box just by the antenna (to lower the loss in the RF cable) and supplied via transmission cable from power source located inside a building.

The LED indicates connection of power supply.

The adapter can cooperate with all devices compliant with 802.3af (PoE) standard, e.g. IP cameras from ACTi.
There are devices which should be powered via Ethernet (RJ-45) port with voltages different from 48 VDC. The example is ULTIAIR family (10-28 VDC). The devices should be connected according to the diagram 1, but in each case the supplying voltage has to be compliant with the relevant specifications.
Devices that cannot be powered via Ethernet port should be connected according to the diagram 2.

Diagram 1 – how to power devices compliant with PoE 802.3af standard

Diagram 2 – how to power devices not compliant with PoE 802.3af standard