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ACS Communications Crescendo Telephone Handset Volume Control Amplifier
Stop straining to hear in a busy home or office environment, simply turn up the volume with your ACS Crescendo. It is easy to install and is compatible with any modular telephone that has a carbon microphone and dial (or keyboard) housed in the telephone base.
Features:
Volume Control: Adjust the volume to the most comfortable listening level by moving the volume control slide switch.
Boost Button: Press and hold down the boost button for more amplification. It also eliminates any background noise and feedback by muting the microphone in your handset. You must remember to release the button when you speak so that the other party can hear you, then press and hold the boost button again when they speak.
Tone Control: Move the Tone Selector switch right or left to a position that allows you to hear clearly. This will give you the optimum speech clarity so that you can distinguish similar sounds such as "chair" and "share."
Battery Indicator: The battery indicator light comes on every time you lift your handset to indicate that the battery level is okay. If the indicator light does not come on, the battery needs to be replaced.
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