Wifi control can be divided into LAN control and WAN control from the distance of control.
1. LAN control
Method 1: The Wi-Fi module works in AP mode, and smart terminals (cell phones, tablets) directly access the network provided by the Wi-Fi module to realize wireless control in the same hotspot network. However, since the Wi-Fi module works in AP mode, which is also known as hotspot mode, it has limited access to smart device terminals, and most of them can provide several other smart controllers (such as cell phones and tablets).
Method 2: Wi-Fi module working sta mode, intelligent terminal and Wi-Fi module working by the wireless router to provide a wireless network environment, the data signal through the wireless router forwarding, so as to realize the LAN wireless control.
Method 3: Use the STA mode of Wi-Fi as a center controller, the wireless communication between the Wi-Fi center controller and other equipment terminals can be 433 technology, 315 technology, 2.4G technology, to form a local area network with Wi-Fi center controller.
Hints: 433 wireless technology is a wireless unidirectional technology, the advantage, the transmission distance is relatively far; Wi-Fi center controller and 433 switch to communicate with 433 technology. At this time, the Wi-Fi module is in STA mode. 2.4G technology is a two-wire wireless technology, but the transmission distance is relatively short; Wi-Fi center controller and 2.4G switch communication between the 2.4G technology, at this time the Wi-Fi module is in STA mode.
2.Wide Area Network Control
Method 1: Simply Wi-Fi technology, using the wireless router as the central control center. At this time the Wi-Fi module works in STA mode. the MAC address of the Wi-Fi module is bound to the service, and the data from the Wi-Fi module is sent through the router. It forms a network with the cell phone's 2G, 3G, 4G or other wifi networks to achieve control.
Method 2: Wi-Fi technology combined with other technologies, such as Wi-Fi and 2.4G or wifi and 433 technology and so on. At this time, the Wi-Fi module works in STA mode, and the cell phone's 2G, 3G, 4G, or other Wi-Fi networks form a network, so as to achieve control.