
BL-521 manual Release Rev5.doc © Copyright Brainboxes Limited 2003 Page 19 of 54
Selecting 0 immediately returns you to the previous menu storing any changes you have made.
Selecting option “1” will immediately render BL-521 “Discoverable”. This means that any other Bluetooth device
can see BL-521 when it performs a device discovery.
Selecting option “2” immediately renders BL-521 “non-discoverable”. No other Bluetooth devices will be able to
see BL-521 when they perform a device discovery. However, in this mode, your BL-521 is still “connectable”. This
means that any other Bluetooth device that knows about your specific BL-521 (i.e. it knows the Bluetooth address
of the individual unit) can still connect to it. You may wish to set this option to avoid confusion when many BL-
521’s exist in close proximity to each other.
Unlike the communications settings, this Bluetooth setting is applied with immediate effect.
3.3.2. Security Mode
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