POE introduction

Latest reply: Dec 17, 2018 09:10:46 302 1 11 1

Some communication terminals, such as telephones, cameras, POS machines, need electricity to work. So the problem arises:

If communication terminals are to be installed in corridors, ceilings, etc., power sockets for them are often not found.

If multiple communication terminals are managed, they must be managed separately, with a large workload and inconvenience.

To this end, scientists have developed a simple, easy to manage, centralized power supply mode - PoE power over Ethernet.


PoE power is supplied through ethernet, which can be supplied only by the network line connecting the communication terminal. PoE provides - 53V - 0V DC power with a maximum power supply distance of 100m.



There are three roles in PoE power supply system:

Role 1 - PoE power module: This role is responsible for providing continuous power for role 3;

Role 2: Power-sourcing Equipment: This role is responsible for "how" to supply power to role 3;

Role 3 - Power Device: This role is responsible for enjoying the services of the first two roles. Those communication terminals belong to this role.




  • x
  • convention:

yiyi0519
Created Dec 17, 2018 09:10:46 Helpful(0) Helpful(0)

can we use it on the outside AP?
  • x
  • convention:

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