What is the power supply type of PoE? Can it be achieved through a 4-core cable?

There are two types of power supply of PoE:

1/2(+) 3/6(-) both for data and power.

1/2(+) 3/6(-) for data and 4/5(+)7/8(-) for power.

In the current market, the PoE camera can support these two types, therefore, it depends on the PoE switch for the final adopted power supply type.

For the cable, CAT 6 is better than CAT5/5e both on the material and registered jack (RJ). It is more stable and reliable for transmission.

What is the transmission distance for PoE power?

The max PoE power transmission distance for most products is 100 meters. And the better-suggested distance is 80 meters. ONV also has a long-distance transmission series, which is up to 250 meters.

What is the voltage of PoE?

IEEE 802.3 af Voltage: 44-57V Current: 10-350mA

IEEE 802.3 at Voltage: 50-57V Current: 10-600mA

For ONV PoE products, it is compatible with both IEEE 802.3 af and IEEE 802.3 at. And max PoE power for each port is up to 30W. PoE switch can be auto-sensing PoE standard. ONV has bt PoE, which max PoE power for each port could be 90W.

How to choose a PoE switch for a camera.

If the power of the camera is 10W, then the IEEE 802.3 af PoE switch is enough. But if the power of the camera is 20W, then you should choose the IEEE 802.3 at PoE switch.