Ramsey TT7
Tone Touch-Tone Decoder Kit, Discontinued

  • Decodes DTMF Touch Tones from telephone, radio, etc.

  • 20mA output drives relays, LED's, digital devices, etc.

  • Telco CO quality decoder with stable crystal control

  • Decodes 0 thru 9, *, #, A, B, C, D

You can strap the TT-7 for detection of any single digit, including the secondary A, B, C, D digits. When the decoder detects the selected digit, it will provide a closure to ground for driving a relay, lamp, sounder, or other such load of up to 20 mA. A commercial central office quality decoder IC chip is used, making the TT-7 extremely reliable, fast and sensitive. You may connect the TT-7 directly across the speaker or detector output on any receiver, and in fact, we even detail how it may be connected directly to a telephone line. We designed the TT-7 to be small enough (about 2 square inches) to fit in many radios for easy installation. If your needs are simply single function remote tone control, the TT-7 is for you.  Runs on 5VDC. Size: 1 1/2" x 7/8" x 2 1/4".
Ordering Information
Model Description Buy Online Price
TT7 Ramsey TT7 Touch Tone Decoder Kit Discontinued

* * Ramsey Products are non-returnable. * *
Defective parts within a kit will be exchanged during the first 90 days.

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