Infrared is an electromagnetic wave having a wavelength between 750 nm and 1 mm. Its frequency is higher than that of microwave but lower than visible light, and it is a kind of light that human eyes cannot see. Due to the short wavelength of infrared light, the diffraction capability of obstacles is poor, so it is more suitable for applications where short-range wireless communication is required, and point-to-point linear data transmission is performed. The Infrared Data Association (IRDA) limits the wavelength of light waves used in infrared data communications to within 850 nm to 900 nm.
A mobile phone equipped with an infrared interface for wireless Internet access is very simple and does not require a connection cable and a PC CARD. You can connect to the Internet directly by setting up an infrared connection protocol.
Fast Ethernet Switch is 10/100Mbps adaptive fast Ethernet Optical Media Converter, with 10M/100Mbps self-adaptive switch, converting the independent 10Base-T or 100Base-TX twisted pair electrical signal with 100Base-FX optical signal. It extends the network transmission range from 100m, the limit of copper line, to 120Km (single mode full duplex). It supports two different types of network connection media, 10/100Base-TX and 100Base-FX. By switching technique and storage & forwarding technique, it realizes the data transmission between two network connection media. It supports optical transmission under dual-fiber multi-mode, dual-fiber single mode, and single fiber single mode.
Fast Ethernet Switch
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