He’s using an Arduino Uno and an Ethernet breakout board to hook it up to the network. This allows him to send text messages to himself when the alarm system is armed, disarmed, or triggered.

[IngGaro]’s latest project uses the full range of features available in this versatile microcontroller and has turned an Arduino Mega into a fully-functional home alarm system. The alarm ...

since you can use a microcontroller based circuit to help you protect your home. Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available ...