Generally, smoke detectors are installed in the kitchen, but you never know when a fire can be caused in other parts of the house due to a short circuit or other reasons. As a result, getting a set of ...

As you might have guessed from the model number, this unit uses 433 MHz to communicate with various sensors and devices ... market and spin your own whole-house alarm system without going through ...

[Jeff Sandberg] demonstrates that ably with his project to use ancient 1990s burglar alarm sensors in his modern smarthome setup. The sensors in question are from an old GM Interlogix security system.