Ezflyr built an AC relay switch that receives commands over the cellular phone network. An ADH8066 quad-band GSM cellular module handles the communication, while a PIC18F2550 controls the relays and reads temperature sensors.
The goal of this project is to remotely switch heaters on his aircraft, which requires a few hours of preheating before a flight to function reliably.
Via the fourm.
love that signature gold on purple
I looked around, where can you buy the Cellular module?? Digikey and mouser don’t carry it :-(
SparkFun has this exact chip, http://www.sparkfun.com/products/10138
but MDfly has some cheaper gsmmodules, you could probably go cheapest over Ebay