Siemens HearCheck Screener User Manual page 7

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Make sure the battery door is closed before using the
device.
This device is not an audiometer and should not be
used for the purpose of hearing disability diagnosis.
For reliable results you are advised to use the device
in environments where background noise does not
exceed 50 dB (A).
For battery replacement, please use only Alcaline Type
AAA batteries or NiMH or NiCd rechargeable batteries,
type AAA. Do not connect directly to any other power
source.
Remove the batteries if equipment is unlikely to be
used for some time.
Do not throw used batteries into household waste.
Use locally provided battery recycling systems for
environmentally correct disposal.
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