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The DTMF Audio/Speech Decoding Telephone Module is a versatile communication module that can decode Dual-Tone Multi-Frequency (DTMF) signals and convert them into usable digital outputs. It is commonly used in telephone systems, home automation, and other applications that require DTMF signal decoding. The module supports audio input through a microphone or line-in connection and provides digital output for further processing or control. With its compact size and easy integration, this module is ideal for projects involving DTMF-based communication and control.

      DTMF Board Audio/Speech Decoding Telephone Module

      SKU: 159
      ₹185.00 Regular Price
      ₹120.00Sale Price
      • Specification

        • Input: Audio (microphone or line-in)
        • DTMF Standard: Compatible with industry-standard DTMF signals
        • Output: Digital signals (TTL level)
        • Power Supply: 5V DC
        • Operating Temperature: -20°C to +70°C
        • Dimensions: Compact size for easy integration


        • Identify the module's input and output pins, which may include audio input, power supply, ground, and digital output pins.
        • Connect the module's audio input pin to a suitable audio source, such as a microphone or line-in connection.
        • Connect the module's power supply pin to a 5V DC power source.
        • Connect the module's ground pin to the common ground of the system.
        • Connect the module's digital output pin to a digital input pin of a microcontroller or other device for processing or control.
        • Ensure the power supply voltage is within the specified range.
        • Write a program or implement the necessary logic to read and interpret the digital output signals from the module.
        • Use the decoded DTMF signals for various applications such as telephone system control, home automation, or other projects requiring DTMF signal decoding.
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