You can automatically connect to a wireless router by using a PIN code. You can use this method to set up if an wireless router is capable of WPS (Wi-Fi Protected Setup). Use a computer to enter a PIN code into the wireless router.
Tap 
on the home screen.
Select Wi-Fi (Recommended).
Tap Start Setup.
If the network connection is already set up, the connection details are displayed. Tap Change to Wi-Fi connection. or Change Settings to change the settings.
Select Others > PIN Code Setup (WPS)
Follow the on-screen instructions.
If you want to check the network connection status for the scanner after setup is complete, see the related information link below for details.
See the documentation provided with your wireless router for details on entering a PIN code.