Product description
The DTMF Shield for Arduino converts DTMF or Touch Tone signals into a format that microcontrollers (uC) or Arduino boards can understand. DTMF tones are analog signals that Arduino and most uC cannot read directly. This module converts those signals into a digital format that uC can easily read.
Features:
* Operating Voltage: 5v, Current draw: 3mA
* Input signal range: 27.5 to 869mVrms (-29 to 1dBm )
* Dimension: 0.79" x 2.16", 20mm x 55mm
Features:
* Operating Voltage: 5v, Current draw: 3mA
* Input signal range: 27.5 to 869mVrms (-29 to 1dBm )
* Dimension: 0.79" x 2.16", 20mm x 55mm