Nebra Indoor Hotspots are provided with Power adapters. You can also power them through Power over Ethernet ( PoE ) which you would need to purchase separately :  PoE Injector and PoE splitter

Nebra outdoor Hotspots support PoE and can be powered with an Ethernet cable ( requires PoE capable router or PoE Injector ). The Nebra outdoor Hotspots are also capable of being powered with a barrel power supply which would need to be purchased separately.

Nebra FAQ