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3. Control Key Functions
Tone, Volume and Speed have default levels at startup. Here’s how to adjust the levels.
3.1. Adjusting the Tone
To adjust the tone, press the Tone Up key or Tone Down key.
To set the tone at the default level, press the Tone Up key or Tone Down key
until you hear a beeping sound.
3.2. Adjusting the Volume
To raise or lower the volume, press the Volume Up key or Volume Down
key.
3.3. Adjusting the Speed
To increase or reduce speed, press the Speed Up key or Speed Down key.
To set the Speed at the default level, press the Speed Up key or Speed Down
key until you hear a beeping sound.