This allows him to send text messages to himself when the alarm system is armed, disarmed, or triggered. All the code is available on GitHub in case you also have a DSC 1550 alarm system.

There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network ...

An alarm clock can be a healthy upgrade to a distraction-free bedroom, despite it feeling like a technological downgrade. After a phone-free week of testing, we recommend six clocks for a more ...