Send GSM SIM800/900 GPRS Data to Thingspeak with Arduino
DAOKI SIM800L GPRS GSM Module MicroSIM Card Core Board Quad-Band TTL Serial Port for Arduino with Antenna 3.7-4.2V with Dupont Cable : Amazon.ca: Electronics
Remote Control Via GPRS/GSM SMS(Arduino) : 10 Steps (with Pictures) - Instructables
Arduino SIM800L Relay Control with SMS | SIM800L Register Phone Number by SMS - YouTube
Remote control via GPRS/GSM SMS(Arduino) -
Arduino GSM/GPRS Shield gets helping hand from Telefonica for data, remote control | Engadget