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Frequently Asked Questions in the Use of PoE Switches in Weak Electrical Engineering
We all know that "PoE switches" play an important role in wireless network coverage or wireless monitoring engineering. Although it is not as eye-catching as wireless APs, bridges, etc., if there is a problem in the actual application process, it will directly affect the entire wireless project. No matter what kind of PoE switch, how good and how powerful the performance is, can't avoid some problems. After all, it is also a machine. In order to take some precautions into consideration before construction and reduce the maintenance of subsequent projects, the following is a list of common problems in the use of PoE switches in the use of weak current engineering and related common sense points!
The POE only needs to install and support a cable, which is simple and space-saving, and the device can be moved at will. Only two pairs of network cables are needed between the visible PoE switch and the camera, so that the camera network signal, audio signal, control signal, and alarm signal can be simultaneously transmitted and the camera can be powered at the same time. It is no longer necessary to pull the power cable and install the transformer, so that the construction cost The power line and the transformer will be saved. If the average distance between the camera and the switch is 75 meters, a 4-port POE switch can save 300 meters of power line and 4 transformers, calculated according to 1.5 yuan per meter of power line. , can save 450 yuan, 4 transformers calculated according to each 15 yuan, can save 60 yuan.