WIFI Module Basics Explained

When it comes to WiFi modules, there are some basics we need to understand. Here's a breakdown of some of the key concepts:

1. WiFi: WiFi is a wireless communication technology that allows electronic devices to interconnect via wireless signals.WiFi uses wireless local area network (WLAN) technology, based on the IEEE 802.11 standard. Through a WiFi network, devices can connect and communicate with each other for data transfer and Internet access

2. WiFi Module:WiFi module is a hardware device with integrated WiFi functionality. It contains components such as WiFi chips, radio frequency (RF) components, antennas and related circuits, etc. WiFi module can be used as a module of the device to communicate with the wireless network and realize wireless data transmission and Internet connection.

3.  Wireless network: A wireless network is a network that communicates through wireless signals. In WiFi technology, a wireless network consists of one or more WiFi Access Points (APs for short.) WiFi devices (e.g., cell phones, computers, smart devices, etc.) can connect to the wireless network through the Access Points for data transmission and Internet access.

4. SSID: SSID is the identifier of the wireless LAN, full name is Service Set Identifier. it is the name of the WiFi network and is used to identify the WiFi network. When devices search for nearby WiFi networks, they will detect the nearby SSID and can only connect to the corresponding network

5.  Security: WiFi networks can have a number of security measures in place to protect the confidentiality of data and the security of the network. One common security mechanism is WiFi Protected Access (WPA) or WPA2, which requires devices to provide the correct password or key when connecting to ensure that only authorized users can access the network

6. Frequency bands: WiFi communication uses two frequency bands, 2.4 GHz and 5 GHz. 2.4 GHz band has better penetration ability and coverage, but it is easy to be interfered with.

5 GHz band has higher transmission rate and less interference, but the signal penetration ability is poor and the coverage area is smaller.

Knowing these basics can help us better understand how WiFi modules work and their application areas, as well as how to set up and secure a WiFi network.