DTMF Decoder is a module that can process DTMF signal (Dual Tone Multi Frequency) to digital data, usually use on telephony system. This modul can use to monitoring touch pad number on telephony, phone security application, sms application , phone usage logging application and many more applications.
specifications:
size 5,1cm (l) x 4,7cm (w) x 1,8cm (h).
base on DTMF decoder HT9170D
equipped with hybrid transformer for 600 ohm phone line
detect and separate DTMF code direct from phone line
RJ-11 interface with line and phone
power supply 2,5 - 5,5 Volt DC.
