Description :
- DTMF Shield is a Dual-tone multi-frequency signaling module decoder for Arduino that can decode the sounds made by phones when keys are pressed
- Can be used to send wireless commands over audio lines, like a phone call
- Can be paired with GSM/GPS shield to enable communication with any phone landline or cell phone in the world, within GSM signal range
- Convenient for sending commands to your Arduino via audio signal
- Can be used with GSM/GPS shield to enable GPS geo-location mapping and DTMF moving functions for a GSM wireless networking remote controlled robot
- Audio socket and speaker connector for audio sound checking
- Microphone connector for over-the-air remote control system (note: not recommended due to environmental noise)
- Size: 37x37x9mm
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