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2023-12-06

What is the disadvantage of PoE camera in door entry system?

The latest generation of PoE power supplies suffer from some power insufficiency. In particular, they can supply ample power to standard pan, tilt and zoom cameras; they cannot provide sufficient electrical energy for high power consumption devices such as network PTZ cameras.

Another downside to the PoE method is that a single PoE power source or switch usually connects to multiple powered devices. If any of these PoE network devices encounter a problem, all of the devices will stop working.

Finally, the use of PoE to supply power to independent devices is relatively expensive. In short, installing a dedicated electrical line is cheaper in the long run for a stable platform but not nearly as flexible as a PoE line.