What is POE power supply?
POE (Power Over Ethernet) power supply refers to the technology of data transmission and DC power supply for other IP-based terminals without any changes to the existing Ethernet Cat.5 cabling infrastructure.
POE power supply, in short, is network cable power supply. The same network cable transmits both data and power. Therefore, POE power supply is mainly used in high-definition network digital monitoring systems, that is, network monitoring.
Advantages:
- Flexible wiring, no complicated power supply wiring is required;
- It can minimize the cost, save the construction and maintenance costs of power supply equipment, such as power cords, sockets, line transformations, etc., as well as installation labor costs and save installation time;
- Flexible deployment, no restrictions on equipment deployment location;
- The safety factor is high, the power supply can be centralized and the backup is convenient. At the same time, the power supply equipment can be connected to UPS (Uninterrupted Power Supply), once the main power input is interrupted, the normal operation of the system can also be guaranteed;
- Strong anti-interference ability, POE power supply can prevent the signal from being disturbed and make the monitoring picture clear.
Disadvantages:
The quality of the network cable is high, and the transmission distance is limited.
Reminder: Note that for safety, it is recommended to use a standard POE camera!
The method to identify non-standard POE: start the device, touch the 4/5 line and 7/8 line of the RJ45 port with two pens of the multimeter, and the dial shows a voltage higher than 10V DC, which is a non-standard POE device.
In general, the advantages of POE power supply outweigh the disadvantages, and the prospects are very broad.
