In recent years, POE's products have become more and more popular. I heard that some light cats support POE. So, a while ago, I searched the website of Dongge. I really bought products that were less than a thousand dollars, so I called my colleagues to help. Place an order. The so-called POE is the meaning of Power Over Ethernet. I worked in school and at the time of my school's digital campus transformation, the network center installed numerous POE equipment on our floor. At that time, we used Ruijie products. Afterwards, my office moved, and a colleague from the next came to help me install a router (CISCO). At that time, I felt very tall. Then I picked up an AP (CISCO) and it was amazing. It was POE's convenience. However, due to a variety of reasons, the office changed furniture again, and the network was reorganized. The original things were demolished, and then only the ordinary Netgear wireless routers that they bought were left. I feel that POE is definitely the future direction of development and is particularly applicable to the business environment. And recently there was also a VR live project research, so POE's portable devices were on the agenda. Arrived, the packaging is still relatively simple, there is no better background, put the ground shot The side is the product's corresponding information Important moments come and open the box Check what things are there: AP wireless real body, 1 ceiling cover, 1 installation manual, 2 packages of screws There were incandescent lights on the ceiling, so when the pictures were taken, the lights were printed. Look at the front of the AP. I thought it would be small, but it was not small at all (I actually wanted to buy a small one.) Functional and powerful... Turn over and look at the back, after the ceiling is installed, turn on the knob and it is very convenient Side interface: 1 reset button, FIT mode for AP expansion, FAT mode is independent operation, then is the cable port, and a security keyhole Thermal end The disadvantages are more obvious: The advantages are still more: The more frustrating thing is that the network cable that was connected to the office network was not connected to the package. This means that although our office network is using an ultra-5 network cable, the router still uses the old one, so it cannot supply power and has to give up to do the boot test. I must first find a router that can supply power to connect it. As it turns out, an advanced device does not mean that your entire link is very advanced. In the middle, you come to a low-end device, and then it becomes a depressing one. After I get all the lines, I will report AP stability and coverage. Currently, most GPS antennas are right-handed polarized ceramic media consisting of ceramic antennas, low-noise signal modules, cables, and connectors. Ceramic antenna, also known as passive antenna, dielectric antenna and patch, is the core technology of GPS Antenna. The reception ability of GPS antenna depends largely on its ceramic components. Low noise signal module, also known as LNA, is the part that amplifies and filters the signal. The selection of components is also very important, otherwise it will increase the reflection loss of GPS signal, resulting in excessive noise. Cable selection should also be based on reducing reflection to ensure impedance matching Combo GPS Antenna ,2 in1 GPS Antenna ,3 In 1 GPS Antenna ,GPS+WIFI Antenna ,GPS +4G +Wifi antenna Yetnorson Antenna Co., Ltd. , https://www.yetnorson.com
With POE, you can save one power outlet. Of course, the premise of using POE is that your network cable must support POE power supply. 
1. I feel a bit too big and not small enough;
2. I also feel like the appearance of the general, but the radish vegetables have their own love;
1. Support dual-band mode, 2.4G (450M) and 5G (1300M) open at the same time;
2.POE installation is simple, saving a power line;
3. It's lighter, and it's not too painful to drop it and estimate it.