The DTMF (Dual Tone Multi-Frequency) decoder module is commonly used to control robots with a mobile phone, it is also used in different kinds of home automation projects where mobile dial pad input is required. This module works as a tone decoder that uses its 3.5 mm audio connector socket to get the input audio signal. The DTMF in tone based dial pads which produces a unique combination of two separate sine waves which can be decoded and produced as binary output. This module can produce binary output by getting tone input from 0-9 number, A - D letters, * and # symbols. It is popularly used for mobile and fixed telephone voice dialing and recording related functions.
- Power Input: 5V Nominal (4.5V - 5.5V)
- Onboard 3.5mm jack input Facility
- MT8870 Based Frequency Decoder
- 5 Channel Interface
- Detects 0-9, A-D, *, #
- LED notifier for Output state
- 54” Pin pitch
1×DTMF Decoder Module
1x Audio Receiver IC
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