Description

Features:

MT8870 module decodes DTMF signals from an audio source and it is suitable for remote monitoring applications, telephone answering machines and more
A low power device DTMF decoder chip. It is a complete DTMF receiver integrating both the band-split filter and digital decoding functions
On-board MT8870 frequency decoder chip
An onboard audio input interface
Onboard LED lights for output status indicator
Specifications:

Operating voltage: 3V – 5V DC
Dimensions: 26.5 x 24.5mm
onboard MT8870 complex frequency decoder chip
an onboard voice input interface
onboard 5 led indicator
The main pin lead out already
PCB size:26.5(mm)x24.5(mm)