Window sensors cost $10-40 each and cover the entry point burglars use 23% of the time (FBI UCR data). Magnetic contact sensors ($10-20) detect when a window opens. Glass-break sensors ($25-40) detect shattered glass from 15-25 feet. Vibration sensors ($20-30) catch both. We ranked 5 sensors by detection range, false alarm rate, and battery life. Abode’s mini door/window sensor ($15) is the best value — works with Z-Wave, HomeKit, and CUE automations. SimpliSafe and Ring sensors cost $15-25 but lack Z-Wave and HomeKit. Installation takes 5 minutes with adhesive backing.
Smart Home Devices
Why Neighbors Cannot Protect Your Home in 2026: Response Gaps and Better Layers
FBI data shows 73% of burglaries happen during daytime when neighbors are at work. Former burglars confirm a neighbor glancing out the window is not a deterrent. Here are 10 security gaps that neighborly vigilance cannot fix — backed by crime statistics and burglar interviews — plus DIY systems from $140 that actually close them.
