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Build Faster with the DTMF Shield For Arduino
This DTMF Shield is a Dual-tone multi-frequency signaling module decoder for Arduino With it's audio connector you can decode the crazy funny noises common phones make. If you are not sure what I'm talking about, imagine a home phone while pressing several of its keys. These Touch-Tones have a specific frequency or sound that this module can decode. This Shield is a Audio code system that will allow you to send commands to your Arduino via Audio signal.
Together with GMS / GPRS / GPS shield this module can communicate your Arduino with any phone land line or Cell phone in the world, within GSM signal range. Which goes as far as your cellphone.
Important: Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.
Why you'll love it
- Audio socket for application
- 37x37x9mm（1.46x1.46x0.35"）
- Speaker connector for audio sound checking
- library and example
- Forum discussion
- DTMF module x1
What you can build
This board is a good fit for learning, prototyping, robotics, and controller-based builds. Use it as the main brain for sensors, displays, wireless projects, and classroom or workshop demos.
Starter bundles
A solid starter setup includes a USB cable, breadboard, jumper wires, and a few DFRobot Gravity sensors or an LCD module for quick testing.
Recommended add-ons
Useful add-ons include sensors, displays, shields, breadboards, headers, and enclosures if you are building a complete prototype or classroom kit.
Technical specifications
| Product | DTMF Shield For Arduino |
|---|---|
| SKU | DFR0308 |
| Brand | DFRobot |
| Interface | GSM, GPRS, GPS |
| Note | For use with the GSM / GPS / GPRS shield, you will need an audio cable (FIT0113) |
| Works with | Arduino |
Pinout & usage notes
Follow the official DFRobot product page and wiki for the exact wiring order, sample code, and setup notes.
DFRobot resources
Official product page: View on DFRobot
Wiki / documentation: Open DFRobot wiki
Forum discussion
What’s in the box
1 × DTMF Shield For Arduino
Frequently Asked Questions
Is this a good choice for learning and prototyping? Yes. It is well suited for classroom work, hobby builds, quick tests, and project development with common modules and sensors.
Does it work with other boards too? Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.
Where can I find wiring and examples? Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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