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.

Tiny RTC DS1307 module White LED strip, 5 m Hardware Setup The hardware setup is pretty straightforward. The Arduino Uno is powered by an external DC supply (12 V) through its DC input socket and 5-V ...

[IngGaro]’s system is built around a shield for an Arduino Mega. This shield includes connections to an alarm system, a GSM modem, temperature and humidity sensors, an Ethernet module, and IR ...