Estimado.
Puedes utilizar la tarjeta ABMasterSW que tiene implementado un Sim900 o colocarle uno que desee. Esta tarjeta tiene las siguientes caracteristicas.
PIC SmartPhone home control board development KIT with Sim900 GSM/GPRS
and RS-232 serial PC interface.
General description
This PIC card is a completed basic kit development module for your smart home automatization. With this I/O card and your smartphone you can turn on/off the relay switch which can be attach to your home light color system, siren horn of security home, a pull water bomb and all the thing power by 110V/220V. Also, you can read home sensor signal. Even, with RS-232 PC interface, you can continue your development windows/linux control sofware using the PC-RS232 serial interface. This card is compatible with hardware/software programmer of microchip tools.
We included a basic test software pre-programmer configurable on the PIC.
A microcontroller PIC16FXXX series included.
Technical characteristics.
4 Relay dry contact for control output: 10A 250VAC, 10A 30VCD, 10A 125VAC, 10A 28VCD.
4 Opto coupler input pulse 5 Volt, completely isolated power supply (2 power possibility).
It comes with a PIC microcontroller with pre-programmed basic testing software.
Ability to connect to the GSM / GPRS network with the SIM900/800C AT command
You can perform comunication with your Mobile SMART PHONE
We included SIM900/800C connected to the microcontroller port.
Compatible with PIC standard microchip programmers like ICD2, ICD3... and more.
http://www.ebay.com/itm/PIC-SmartPhone-Home-Control-Board-Development-Kit-with-Sim900-GSM-GPRS-RS232-/282219280461?hash=item41b594784d:g:T~gAAOSw8gVX32RaSALUDOS.