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.
Spesifications : - On-board MT8870 frequency decoder chip - On-board audio input interface - On-board LED lights for output state indication - PCB Size: 26.5 x 24.5 mm