Arduino UNO R4 WiFi development board. USB to Micro USB-B data cable. Once you have these components in hand, then you are in ...

and its USB port is somewhat outdated (who still has a USB-B cable nowadays?). But even after eliminating the Uno from your selection, you'll still be left with a wide array of Arduino boards to ...

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.