MT8870 DTMF Audio Decoding Module

The MT8870 DTMF Audio/Speech Decoding Telephone 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.

Features:

1. Onboard voice input interface
2. Low power consumption
3. Internal gain setting amplifier
4. Onboard LED, it is very convenient to check the output state.
5. Adjustable guard time
6.  Central office quality
7. Onboard 3.5mm input interface
8. 5 Channel interface
9. On-board MT8870 frequency decoder chip
10. Power-down mode
11. Inhibit mode
12. Onboard audio input interface
13. Onboard LED lights for output state indication Complete DTMF Receiver.
14. Does not require external circuits or wiring, it can be inserted directly into the UNO/MEGA2560/DUE board to use.
15. 12-Digital outputs decode mobile and fixed telephone keys (0-9, * #). Also, another 4 Digital output(ABCD) can use “DTMF Dial” for Software control.

Packing List:

1Pc * MT8870 DTMF Audio Decoding Module