Why it is practical
A camera under the roof or an access point on the ceiling needs just one cable. When the PoE switch is connected to a UPS, the cameras keep recording even during a power cut.
What to keep in mind
- Add up the power draw of all devices and compare it with the PoE switch's power budget.
- Cameras with illumination and heating need more power.
- Some manufacturers' passive PoE is not compatible with the standard and can damage devices.