The MT8870 DTMF Module is specifically designed to recognize and decode DTMF signals generated by a keypad or other DTMF signal sources. It is a useful component for projects that require remote control, automation, or interaction with telephone systems. The module simplifies the process of decoding DTMF tones, making it easy to integrate into microcontroller-based systems.
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Rs.145.00
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DTMF Decoding: The primary function of the MT8870 module is to decode DTMF signals. It can detect and identify the specific DTMF tone pairs associated with each button on a telephone keypad.
Dual-Tone Detection: The module is capable of detecting the two simultaneous tones that make up each DTMF signal. These tones represent the row and column frequencies of the pressed button.
Digital Output: When a valid DTMF signal is detected and decoded, the module provides a digital output corresponding to the pressed button, allowing a microcontroller or other digital device to take action based on the detected tone.
16-Key Operation: The module can decode all 16 DTMF tones associated with the 12 standard telephone keypad buttons (0-9, *, #) and four additional auxiliary keys (A, B, C, D).
Adjustable Gain: Some MT8870 modules allow for gain adjustment to improve the sensitivity and accuracy of tone detection, especially in noisy environments.
Serial Data Output: Some variants of the module may provide a serial data output option, which can be used to transmit the decoded DTMF information to a microcontroller or computer.
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