Click on the following link for product video demo presentation. https://youtu.be/7FFq5zcYKOE

The MT8870 based 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. It is popularly used for mobile and fixed telephone voice dialing and recording related functions.


Technical Specification:
Power Input: 5V Nominal (4.5V - 5.5V)
Detects 0-9, A-D, *, #
54” Pin pitch
Size: 37mm*25mm*12 mm (L*W*H)


Features:
Onboard 3.5mm jack input facility
MT8870 based frequency decoder
5 Channel Interface
LED notifier for output state
On-board MT8870 frequency decoder chip
On-board audio input interface
On-board LED lights for output state indication


Applications:
Wired Robot control via mobile phone keypad
Home Automation
Security Systems

1x speech decoder module