What is WiFi

WiFiFull nameWireless fidelityIt is also known as the 802.11b standard. Its biggest advantage is its high transmission speed, which can reach 11 Mbps. In addition, it has a long valid distance and is also compatible with various existing 802.11dsss devices.
Wi-Fi is a wireless network composed of an AP (Access Point) and a wireless network card. AP is generally called a Network Bridge or access point. It serves as a bridge between a traditional wired local network and a wireless local network, therefore, any PC with a wireless network card can share resources in a wired local area network or even a wide area network through an AP. The working principle is equivalent to a hub or a route with a built-in wireless transmitter, the wireless network adapter is the client device responsible for receiving signals sent by the AP.

Health and Security
The emission power stipulated in 100 cannot exceed MW, and the actual emission power is about 60 ~ 70 mW. What kind of concept is this? The transmit power of the mobile phone is about 200 to 1 W, and the handheld walkie talkie is as high as 5 W. In addition, the wireless network is not used as a mobile phone to directly access the human body. It should be absolutely safe.