DTMF Enabled SIM900 GPRS/GSM Shield


SKU: SLD-000012 Categories: , , Tags: , , ,

Product Description


This shield provides GPRS/GSM service to Arduino.¬†With this shield attached (together with a SIM card), Arduino could join its local mobile service provider’s cellphone network and start communication via SMS, Voice, DTMF, and GPRS service.

This shield connects to Arduino with long-wire headers, which keeps the pin layout intact and allows another shield to be stacked on top.


  • Selectable HW/SW serial port via onboard jumpers.
  • Quad band global network support.
  • Integrated TCP/IP stack.
  • Onboard earphone and microphone connectors.
  • Onboard LED indicators for Ringing, Status, Network and Power.
  • DTMF enabled SIM900 firmware
  • High-efficient onboard DC-DC convertor.
  • ESD Protected SIM card and Audio interface.
  • SMT machine assembled and high quality PCB

In the Package

  • A fully tested and assembled SIM900 GPRS/GSM shield
  • A quad-band antenna




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