MT8870 DTMF Voice Decoding Module

The DTMF Decoder Module is the ultimate solution for projects requiring dual-tone multi-frequency decoding. Ideal for modem interfaces, mobile radios, and other DTMF applications, this module offers versatile compatibility and user-friendly design.

With onboard LEDs, low power consumption, and adjustable guard time, it ensures quality performance and easy integration into UNO/MEGA2560/DUE boards. The central office quality and internal gain-setting amplifier guarantee optimal signal reception, making it a reliable choice for diverse projects. Convenient input interfaces, multi-channel outputs, and complete functionality make this module a must-have for enthusiasts and professionals alike.

Purchase now and experience seamless DTMF decoding!

Features:

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

MT8870 DTMF Decoder Circuit Diagram:

Applications:

• Modems, mobile radios, call routing.
• Mobile-controlled robots.
• Home Automation.
• Menu navigation via phone keypad.
• Industrial Automation.
• Education.
• Prototyping

MT8870 DTMF Decoder Module - Arduino Test with PWM Audio Synth Tones