and detergent, do not use
abrasives and alcohol.
4. If do not operate for a long time,
should take out the battery
to avoid leakage.
4-1. When signal displays,
should replace the battery
following the steps:
4-1-1. Unlock the button and
remove the battery case.
4-1-2. Take out the old battery and
replace the new one. It's
better to use alkaline
battery for longer life.
29
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