Hioki BT3554 - 7.2 Communicating with a Smart Phone or Tablet (Only for BT3554-01); Bluetooth Function ON;OFF

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Backlight
 For continuous use of the instrument, set the function to off. (The
default setting is on.)
 When the auto power save setup screen is displayed
unintentionally, turn off the power and turn it on again. The
instrument settings are restored unchanged.
6.5 Backlight
The instrument’s backlight can be turned on and off.
Backlight OFF Backlight ON
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