This project uses the Seeed Studio GPRS/GSM v2.0 Shield to build a versatile Arduino-based remote alarm system that can notify your cell phone within seconds, via text message, when nearby doors or windows are opened or closed, pressure sensors depressed, or motion sensors activated, just to name a few of the many possibilities. Here we'll teach you how to connect simple motion, touch, pressure, and light sensors, and how to program the Arduino to use the shield to send text messages when these detect events. It's easy to adapt this system to use other sensor devices like temperature probes, magnetic switches, tilt sensors, etc.










