BAFO BF-8000 - Manual (Page 33)

From the Bluetooth Configuration screen, click “Discovery” Tab. Check the box of
“Look for other Bluetooth devices” and input the interval.
Some devices within connection range may not show up in the list of devices found
because:
Your device is configured to report only specific types or classes of devices
(Bluetooth Configuration Panel > Discovery tab, on your device).
The unlisted device is configured to be non-discoverable (Bluetooth
Configuration Panel > Accessibility tab, on the un-listed device).
6.6 FIND A SERVICE
The process of determining the services that a device provides is called Service
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