Real Time Home Security System ... you can use any SIM900A modem (and ofcourse any Arduino Uno board) of your choice. Carefully read the modem documentation before construction to make the task sweet ...

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.

[Lior] wanted to cancel the monitoring system for his home’s alarm, but he didn’t want to stop using the ... details. An Arduino controls the system, with a SIM900 GSM shield to hand the ...