D-Link DIR-816 User Manual page 110

DIR-816 Wireless AC750 Dual Band Router with 3G/LTE
Support and USB Port
User Manual
Parameter
Enable periodic
scanning
Scanning period
When you have configured the parameters, click the APPLY button.
Move the switch to the right to let the router search for a free
channel in certain periods of time. When the switch is moved to the
right, the Scanning period field is available for editing.
Specify a period of time (in seconds) after which the router rescans
channels.
Page 110 of 215
Configuring via Web-based Interface
Description