Intuitive Circuits, LLC - DTMF Decoder and Video Text Inserters
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DTMF-8 DTMF-8 is an inexpensive, self contained, DTMF (dual tone multiple frequency) decoder board which permits users to control remotely, via radio or other audio producing source, the on or off state of eight devices. For larger applications several DTMF-8 boards can be attached to the same control audio source to control dozens of devices. DTMF-8 supports four modes of operation.

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Our products span a wide variety of diverse applications:


On-Screen Display Products: Video on-screen text insertion technology for point-of-sale, GPS, and more.

        RS-232 / TTL Controlled


        Fixed (Static) Screens


        Point of Sale (POS) Text Inserters


DTMF Products: DTMF (dual tone multiple frequency) decoders and encoders.

GPS Products: Non on-screen display GPS logging devices.

Amateur Television (ATV) Products: ATV products for the amateur radio hobbyist.

Miscellaneous Products: Novel utility circuits.

Discontinued Products


Click here to download our NEW 2011 product catalog: IntuitiveCircuits2011Catalog.pdf

DTMF Decoder Board
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