Dtmf Relay Board, AD22A08 DC 12V 8CH DTMF Relay Phone Voice Decoder Remote Controller Switch Module

The DTMF-8 DTMF Decoder is an inexpensive, self contained, DTMF (dual tone multiple frequency) or touch tone decoder board which permits users to remotely control, via radio or other audio producing source, the on or off state of eight devices or relays.

2018年5月25日 · This is the DTMF audio controller with four channels, any phone or fixed telephone with DTMF key code remotely controls product relay "open" and "close". (the majority of smartphones and functions machine are DTMF code). Our software "DTMF Dial" (installed in a computer) can be also provided to control relays.

Synchronize props, lights, etc. with your audio and videos. This board receives commands in the form of DTMF tones and turns relays on and off. Control anything that can be controlled with a switch or button. Either edit your own DTMF tones to create your own effects, or use a pre-made haunt-effect DVD. Features: 4 relay channels

2018年2月22日 · 4 Channel DTMF Tone Signal Decoder Relay Working voltage DC 12V, with reverse polarity protection Operating Current: Standby 11-13 MA, 1 relay The default control command is 1/2/3/4

The MT8870 module is a low power device DTMF decoder chip. It is a complete DTMF receiver integrating both the band-split filter and digital decoding functions. This module is suitable for modem interfaces, mobile radios and other DTMF related applications.

A DTMF board is a hardware module designed to generate or detect Dual-Tone Multi-Frequency (DTMF) signals. These boards are commonly used in various electronic projects, particularly those involving telecommunication and control systems.

Our new MT8870 DTMF Receiver Mini Board is ideal for remote switching of various devices over the phone line using a landline or mobile connection. Switch on lights, heaters, watering …

The DTMF Audio/Speech Decoding Telephone Module is a versatile communication module that can decode Dual-Tone Multi-Frequency (DTMF) signals and convert them into usable digital outputs. It is commonly used in telephone systems, home automation, and other applications that require DTMF signal decoding.

2016年2月1日 · Another Arduino project I’ve been working on is a DTMF decoder used to control a relay board. Using a ham radio receiver, I can switch lights, radios, computers…anything…on or off from miles away. Here’s the video: