Tenda TEF1218P switch supports 16 PoE ports, which can supply power to most powered devices through 8-core Ethernet cable, and the total PoE power can be up to 250 W while each PoE port can support the maximum PoE power of 40 W. In reality surveillance project, cameras are generally installed outdoors or in high position, which makes the cameras and switches under the risk of lightning shock . As a result of the individual equipment damaged, or lead to the whole local area network (LAN) paralysis, Tenda TEF12 series switches are designed with professional ports and lightning protection up to 6 KV , with two kinds of protection design respectively and effectively restrain the power of lightning from cable , which equivalent to give the entire network monitoring system with a security fence. The test standard is much higher than the national CCC request. In thunderstorms weather, it can also provide monitoring network . In the complex surveillance environment, when making cabling and networking, it generally encounter the problem of inadequate network transmission distance, the distance of each camera terminal to the monitoring center is different, some only a few meters, some hundred meters, while some are more than kilometers.
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