How the WiFi module works
The Wi-Fi module, also known as the serial Wi-Fi module, belongs to the transmission layer of the Internet of Things, and its function is to convert the serial port or TTL level into an embedded module that meets the Wi-Fi wireless network communication standards, with built-in wireless network protocol IEEE802.11b.g.n protocol stack and TCP\/IP protocol stack. Traditional hardware devices embedded with Wi-Fi modules can directly use Wi-Fi to connect to the Internet, which is an important part of wireless smart home, M2M and other iot applications.
The WiFi module performs fast networking by specifying the channel number. In the normal wireless networking process, all the current channels are automatically scanned first to search for the destination AP created (or Adhoc) network that is ready to connect. The serial wifi module provides parameters for setting the working channel. Under the condition that the destination network channel is known, the working channel of the module can be directly specified, so as to achieve the purpose of speeding up the networking speed.
Your question is too broad. Which appliance does home appliance mean? What application is the smart wifi module installed? Take skylab's Internet of Things wifi module WU105 as an example. It is a smart socket WiFi module that needs to be built into the socket, and users can control the switch through the mobile phone APP after networking. That is, when you send control commands to WU105 module through wifi, WU105 module will generate corresponding actions after receiving the commands, and then cut off and turn on the power to the corresponding socket. Then, your home appliances can be controlled by mobile phone APP.