Planet Technology BT-510U - Manual (Page 16)

Note
If several services (profiles) are supported by the device, the service that has
been set to the highest priority shall be automatically selected and set up in
Express Mode. Please use Custom Mode if you wish to select desired services
manually.
When a service has been detected, a window prompting you to enter the
Bluetooth passkey (PIN code) may appear. Please enter the passkey and click
on the [OK] button.
If you have not entered your Bluetooth passkey after a certain amount of time
has passed, the connection process will be cancelled for security reasons.
Please perform the passkey entry process again.
A message will appear prompting you to prepare the device for connection.
2. Click on the [OK] button.
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