User Manual

6. Replacing the battery
If no sound pressure level output, then the battery needs to be
replaced.
For changing the battery please follow these steps:
1. Loosen the screw of the battery compartment cover on the
back and remove the cover from the battery compartment,
2. disconnect the old battery from the battery cable and remove
the old battery from the battery compartment,
3. Connect the new 9 V battery to the battery cable and replace
battery in the battery compartment
4. Replace the battery compartment cover and secure it with the
screw.
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