Operation, Volume control, Tone control – ClearSounds Portable Telephone Amplifier User Manual

Page 4: Boost switch (for il40 only), Battery indicator

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Operation, Volume control, Tone control | Boost switch (for il40 only), Battery indicator | ClearSounds Portable Telephone Amplifier User Manual | Page 4 / 10 Operation, Volume control, Tone control | Boost switch (for il40 only), Battery indicator | ClearSounds Portable Telephone Amplifier User Manual | Page 4 / 10
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