The 10 Best Window Alarms

The best-selling GE Personal Security Alert (appx. $9) includes two window or door units for protecting your most vulnerable entryways. You can install them quickly without needing any technical knowledge, and they are easily operated, thanks to a single push-button design.

Unlike many, the WSDcam Wireless (appx. $9) includes a remote, which offers you an ultra-convenient way to arm and disarm it. And thanks to a 49-foot range, you can be sure that the downstairs is protected without having to get out of your warm bed.

The Doberman Security Ultra-Slim (appx. $24) features four sensors that not only sound off when a window is opened, but will also detect vibrations if someone is messing around without permission. They're highly tuned, so rain or sleet shouldn't set them off accidentally.

You don't have to rely on guesswork or assume that these Noopel 120 dB (appx. $15) have enough juice, because they've got a low battery indicator to let you know when it's time for a change. Each runs on three LR44s, which are, thoughtfully, included.

The Eva Logik 4 Pack (around $23) is a go-to for busy households. With their built-in sensors they detect vibrations, but they have two sensitivity settings, high and low, which can prevent false alarms caused by a curious cat or boisterous children.

You can have peace of mind wherever you go with the Lewis N Clark Portable (appx. $9), which functions on both doors and windows. It's even got a flashlight built in, so you don't have to fumble around in the dark should you need to adjust or remove it.

Each of these LingsFire Magnetically Triggered (around $18) are designed with extra sensitivity, ensuring you are notified the instant a burglar tries to enter your domicile. They can also be placed on glass sliders for toddler-proofing.

Opinion is divided when it comes to the Eve Contact Sensor (around $40). On the one hand, it will send notifications to your iPhone whenever it's triggered, but on the other, you have to be within Bluetooth range for this to work, unless you also invest in a home hub.

With a 120 dB alarm that is audible at up to 750 feet away, the Sabre Wireless (about $15) will let you sleep soundly knowing that it's loud enough to wake you up in the event of a break-in. Plus, the test button lets you periodically check that it will be ready when you need it.

These Aleph DC-1561 (around $15) sensors mount to most surfaces and use magnetic contacts to tell when a window or garage door is opened beyond a certain point. They're compact and budget-friendly, and will make a good addition to your current home security system.