User's Guide Part 1

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The uDirect 2 will play a confirmation sound
each time the streaming via FM is activated and
the audio indicator will turn orange.
The uDirect 2 will send a short alert signal
during FM streaming if there is no FM signal
for 45 seconds, and then every 15 minutes
thereafter.
If there is no FM signal for more than 15
minutes, the notification tone restarts as
soon as the FM signal is detected again.
To deactivate FM completely, unplug the FM
receiver from the uDirect 2.