MCCTV Security & Surveillance System Solution News From CCTUNG

Whether it's network cameras (IPCs) in security surveillance or wireless access points, access control devices, and VoIP phones in smart offices, they're increasingly relying on PoE technology to meet the dual needs of "data and power." However, in actual deployments, a core question often arises: 👉 What is the maximum transmission distance of PoE power? Is it 100 meters? 200 meters? Or indefinitely? Will the equipment still operate stably beyond this distance? Today, we'll explore the reasons. What is PoE?PoE, short for Power over Ethernet, refers to the simultaneous transmission of data and power over a network cable (typically a...

Not to pocket the money one picks up Refers to returning lost property to its owner without concealing or claiming it as one's own property, which reflects a noble moral quality and social fashion. Among them, Jin" originally refers to money, but now refers to all kinds of valuables; "Mei" means to hide or conceal. This story is related to Lin Ji's return of the lost property: Lin Ji, a native of Nan'an, Quanzhou (now Nan'an, Fujian) in the Northern Song Dynasty, was known for his integrity. During the Yuanfeng period of the Northern Song Dynasty, on his way to...

Braised pork is a famous Chinese dish.It is made from pork belly. The pork is cooked with soy sauce, sugar, and some spices. It tastes sweet and salty. After cooking for a while, the pork becomes soft and juicy. The name "hong shao rou" means "red-braised pork" because the dish looks red. The red color comes from the soy sauce and sugar. The sugar caramelizes, making the pork shiny and sweet.This dish has been around for many years. It is said to have been made first during the Qing Dynasty, and was very popular back then.The recipe first came from...

Every drop of water is on an endless global journey, known as the "water cycle," which keeps the Earth  full of life. The story begins in the blue oceans. Sunlight, like countless small hammers, beats against the sea surface. Heated by the sun, seawater turns into water vapor and rises gently into the air. This process is called evaporation. These water vapor particles travel together, drifting toward the land with the air currents, like taking a free aerial train. This step is known as water vapor transport. When water vapor meets cold air, it condenses into tiny water droplets or ice...

Notre-Dame Cathedral is a very famous（著名的） church in the center of Paris, France. It was built on a small island called Île de la Cité, which is surrounded（被环绕） by the Seine River. Many people from all over the world come to visit（参观） this beautiful place. This church is very old（古老的）. The building started in the year 1163 and was finished in 1345. That means it took more than 180 years to complete! People at that time worked very hard and used big stones to build it, one by one. The church is very beautiful（漂亮的）. It has two tall towers and...