D-Link DWR-112 User Manual page 101

Section 5 - Connecting to a Wireless Network
3. Enter the same security key or pass phrase that is on your router
and click Connect.
It may take 20-30 seconds to connect to the wireless network. If the
connection fails, please verify that the security settings are correct.
The key or pass phrase must be exactly the same as on the wireless
router.
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