"Sonic Ring Elite Deluxe Videophone Signaler, Model TR75VR" hooks up to a lamp or room light to flash when there is an incoming call...perfect for those who are hard of hearing, have weak phone rings or are located in another room. There are three flash patterns to choose from on this new unit. These sell on Amazon for over twice what I asking.
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Interested parties please call Tom at 717-763-574eight.