Shortly before 7 p.m. on Tuesday, some residents in Western Massachusetts were jolted by a loud alarm on their phones. An emergency notification sent by Monson police flashed across people’s screens, ...

Why I switched to wireless security cameras after years of testing wired models ...

We rounded up the best savings still available after Amazon's Prime Day, so you can lock down the very best prices for making ...

Fi? Most home security cameras are Wi-Fi enabled, but some work without Wi-Fi. Local storage, wired and cellular cameras ...

Here's what to know about earthquake warning systems after multiple quakes struck from California to Japan to Venezuela.

Door sensors detect door position (i.e., open or closed) based on the precise gap between the magnet and the reed switch.