The following Gigaset devices supports PoE IEEE 802.3:

DeviceClass
N5101
N720 DECT Manager1
N720 DECT Base2
N610/N670/N770/N8701



                                                    Description of  Power classes:

Class
Usage
Classification current (mA)
Power range (W)
Class description
0Default0 - 40.44 - 12.94Classification unimplemented
1
Optional
 up to 12
 up to   3,84
Very low power
2
Optional
 up to 20
 up to   6,49
Low power
3
Optional
up to 30
 up to  12,95
Mid power
4
Reserved
up to 44
 up to  25,50
High Power

Note: 
If additional modules ZY900 / ZY700 are connected, or WLAN is used to connect the DE900 the local network,
the external power supply must be used.