It is powered by PoE 100%. Just spend a category 5 or higher cable from the PoE switch to the platinum NovoSIP. Even the electric lock is supplied with PoE! Need complicated installation: you connect the PoE switch on the box or the Internet router, then connect the Category 5 Ethernet cable connecting the RJ-45 connectors on each end. There are currently more than connect the two son of the electric lock directly on the terminal block of the plate!