D-Link DWR-116 User Manual page 31

Section 3 - Configuration
If you chose GOOD, select whether to use a HEX or ASCII
password, then enter a password to use for your wireless
network. If you choose HEX, you will need to enter a 10 or 26
digit password using only hex characters (0-9, A-F). If you choose
ASCII, the password can be between 5 to 13 alphanumeric
characters. Click Next to continue.
This completes the Wireless Connection Setup Wizard. Click Save
to save your changes and reboot the router.
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