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E-lins wireless 4g router with sim card for IOT area
Routers are divided into local routers and remote routers. Local routers are used to connect network transmission media, such as optical fiber, coaxial cable, and twisted pair; remote routers are used to connect remote transmission media and require corresponding equipment, such as telephone lines. Equipped with a modem, the wireless must pass through a wireless receiver and transmitter.
The 4G with sim card router is a high-speed industrial Internet of Things router, compatible with 4G/3.5G/3G/2.5G networks across the board, flagship-level configuration, VPN link, industrial-grade protection, and wide temperature design, which can easily form a high-speed and stable wireless transmission network , Use the public LTE network to provide users with wireless long-distance data transmission functions.
Router is a device that connects to various local area networks and wide area networks in the Internet. It automatically selects and sets routes according to the channel conditions, and sends signals in the best path and in order. The router is the hub of the Internet, the "traffic police". At present, routers have been widely used in all walks of life, and various products of different grades have become the main force in realizing various backbone network internal connections, backbone network interconnections, and backbone network and Internet interconnection services. The main difference between routing and switches is that switches occur at the second layer of the OSI reference model (data link layer), while routing occurs at the third layer, the network layer. This difference determines that the routing and the switch need to use different control information in the process of moving information, so the two ways to achieve their respective functions are different.
