The PoE injector is suitable for powering up to eight devices supporting passive PoE. To LAN ports on one side connect device without power supply eg switch, on the other side connect devices using passive PoE - WiFi, VoIP or other devices supporting passive PoE. The power supply uses two unused pairs of ethernet cable: 4,5 (positive pole) and 7,8 (negative pole). Power supply is connecting via terminal block.
The hole pitch is for attach 140 x 30mm.