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12
Turn on/off the sound
- By default, the button sound is off.
- To turn on the button sound, long press the “-” button for 5 seconds until Beep goes once.
- To turn off the button sound, long press the “-” button for 5 seconds until Beep goes twice.
Notice: Turning the sound on/off should be at the lowest magnification mode.
Long press
Zoom Out Button