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.

LCD keypad combines HID smart card reader, access control and alarm keypad in one Pacom Systems' new reader will work as an access control pad and alarm keypad and will read HID iClass cards.

But that project only showed you how to interface the Arduino with the keypad — [Doug] went the extra mile and interfaced directly with the control board for more features.