[Jeff Sandberg] demonstrates that ably with his project to use ancient 1990s burglar alarm sensors in his modern ... and a reed switch to sense if the door or window is opened.

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 ...

Some companies, such as Alarm.com and Vivint ... sound of an intruder smashing a window to get inside. • Garage-door-tilt sensors: Placed on the interior side of a garage door, these sensors ...

Google is also killing its Nest x Yale door lock, which launched in 2018. It says existing Nest x Yale locks will continue to ...