What do the Wi-Fi status icons on the ET-2800 LCD screen mean?

The ET-2800 displays several Wi-Fi status icons on the LCD screen: no connection icon means no Wi-Fi connection is active, a wireless network error icon indicates a connection error or the product is searching for a connection, bars indicate an active Wi-Fi connection with bar count showing signal strength, a Wi-Fi Direct icon with no connection means Wi-Fi Direct is not connected, and a connected Wi-Fi Direct icon means a direct connection is established.