25+ Dtmf Decoder Pictures. Built in speaker to monitor call progress. Scroll right or left to view the digits in the 16 character lcd display.

Dtmf Decoder Board from www.elementzonline.com

Single sided pcb is designed in eagle software, size of the pcb is kept optimum. The 637 is capable of accepting a sequence of from one to four dtmf signals, and responds by actuating its integral dpdt output relay. M dtmf stands for dual tone multi frequency.

Dtmf decoder (sorry for my english, i'm not dumb but french.

The relay action may be momentary, latching or toggling. Dtmf decoder for.wav and.mp3 files or when given an The relay action may be momentary, latching or toggling. This is module features mt dtmf decoder ic.