USER MANUAL
HR40 is working with CR2032 button battery(already installed), normally it can
work for 340 hours.
(Device will go into sleep mode with very low power
consumption while no using.)
Battery replacement
Take off the battery cover by using a coin to rotate the battery cover towards
left side.
Deal the old battery properly according to local rules.
Install the new battery(keep the positive(+) side up), and using a coin to rotate
the battery cover towards right side.
To avoid danger, please keep the batteries away from children.
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