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DTMF board

price : Rs.280

  • • Operating Voltage 5 V DC Regulated power supply input

    • Operating Current 100 mA Decodes DTMF as 4 bit binary

    • TTL level output for direct connection to microcontrollers

    • Low power 5V DC operation

    • LED indication of outputs

    • Simple to use

    • Based on excellent MT8870 IC

    Cost : Rs.280

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