Krown In-Line SIP or Analog Telephone Amplifier

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  • Works with analog or digital telephones
  • Portable, lightweight, take it anywhere
  • Connects easily between the phone base and handset
  • Adjust the high-frequency sounds to a desired listening level

Will increase your telephone volume up to 20 times. Easy to install with any telephone at home or office. Required a 9-volt battery (not included).

  • Low battery light indicator
  • Easy to use volume slide
  • Power button to prolong the life of the battery