User Manual

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Press button to shut down external ring sound.
When icon displays, it means that the external ring is closed.
4.4 Modulate external ring sort
Enter option menu  Set Ring  press button. Now this product will play the
ring music being latest selected.
You can chose and buttons to select  press button to make
sure the present selection; there are five different rings under selection.
4.5 Connect BTH-818 to cellular phone
While Bluetooth is offline, press button for over 3 sec and a “beep” is heard from
external ring, BTH-818 now will go connecting cellular being paired already. As soon as
the paired cellular phone is connected the icon will show up. Regarding the pair
management please refer to Section 3.5.
Description: If the Bluetooth can support vocal dialing service, user can apply it to
perform vocal dialing process.
4.6 Clean up call list and phone book data
Enter option menu  Set System  Data Clear  press button; and now
screen will display “Data Clear” that will clean up data being saved and undo back to
default one.
4.7 Backlight operation
While operating any of BTH-818 function keys, the backlight will light up and maintains for
5 sec before it is off automatically.