Window sensors are a critical part of any home security system. When cameras fail, a window sensor becomes your last line of defense. Install them on all your windows, and you will know when an ...

The YL-333 Magnetic Antitheft Alarm is an easy to install security alarm system for doors and windows. This battery-operated device works on the principle of magnetic proximity detection. It can ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. Arlo is mostly known for its popular security cameras, but ...