
backlight and keypad lock
To activate backlight:
Press ![]()
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/
to turn backlight On for 3 seconds.
You can press any key to turn backlight On for another 3 seconds.
NOTE: The backlight function will not operate if “
” or “
” is displayed.
To toggle keypad lock On or Off:
Press and hold ![]()
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/
for 2 seconds.
indicates keypad is locked.
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