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Modern Alarm Systems

Modern alarm systems are designed to be easy to use and reliable. They're also designed to provide security for your home or business, while being as unobtrusive as possible. Browse the top-ranked list of modern alarm systems below along with associated reviews and opinions.

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  1. Ring - Alarm Motion Detector (2nd Gen) (2-Pack) - White

    SKU: J36CLVSCT4

    Product Description

    A pair of white, battery-powered motion detectors offering easy installation and instant security alerts via app.
    See all Motion Sensors & Detectors
    Your price for this item is $59.99

  2. Ring - Alarm Motion Detector (2nd Gen) (1-Pack) - White

    SKU: J36CLVSCTG

    Product Description

    A battery-powered white motion detector that provides instant alerts and easy installation for enhanced home security.
    See all Motion Sensors & Detectors
    Your price for this item is $29.99

  3. Ring - Alarm 8-Piece Security Kit - White

    SKU: J36CLVS279

    Product Description

    A white, app-compatible security kit with motion detection, battery backup, and real-time alerts for home protection.
    See all Home Security Systems
    Your price for this item is $249.99

  4. Ring - Alarm Pro Home Security Kit 14 Pieces - White

    SKU: J39QV8X59J

    Excellent alarm system...Excellent alarm system. Installed in my home and it works perfect...Home alarm system...The Ring home alarm system was easy to install, and reasonably priced.

    Product Description

    A comprehensive white security kit offering whole-home protection, Wi-Fi 6 connectivity, and real-time app alerts.
    See all Home Security Systems
    Your price for this item is $379.99

  5. SimpliSafe - 7pc Indoor Security System - White

    SKU: J362VFSGH7

    Fantastic small home alarm system....Nice loud alarm. Functions beauty. Home is safer and I sleep sounder with it on. ...Alarm system works as expected i feel much safer in my home!

    Product Description

    A seven-piece wireless indoor security system in white with app compatibility and 24/7 professional monitoring support.
    See all Security Camera & System Accessories
    Your price for this item is $129.99
    Save $100
    The previous price was $229.99

  6. SimpliSafe - 9pc Outdoor Home Security System - White

    SKU: J362VFSGHV

    SimpliSafe Alarm System...Will be adding onto they system....One standout feature for me is pet mode, which helps avoid false alarms triggered by my dog. My city fines homeowners for false alarms, and...

    Product Description

    A comprehensive white wireless security system featuring HD cameras, entry sensors, motion detection, and 24/7 monitoring.
    See all Home Security Systems
    Your price for this item is $299.99
    Save $150
    The previous price was $449.99

  7. SimpliSafe - 8pc Outdoor Home Security System - White

    SKU: J362VFSGHT

    Great security system...Great system! Easy to set up, easy to use and works well....This 8-piece outdoor home security system was a breeze to set up, and the app makes it incredibly easy to monitor everything...

    Product Description

    An eight-piece white wireless security system with HD outdoor camera, motion detection, and 24/7 monitoring.
    See all Home Security Systems
    Your price for this item is $174.99
    Save $175
    The previous price was $349.99

  8. Ring - Alarm Security Kit 9-Piece (2nd Gen) - White

    SKU: J39HW69Z65

    Alarm System...I absolutely love my Ring Alarm System! User-Friendly, Easy to operate/install and I now have a greater sense of security in my home.

    Product Description

    A comprehensive white security kit featuring app compatibility, battery backup, and real-time alerts for home protection.
    See all Home Security Systems
    Your price for this item is $299.99

  9. SimpliSafe - Wireless Auxiliary Siren - White

    SKU: J3L6GWR598

    The external alarm is a great accessories for the simpli safe System by adding a more audible alarm to the system....Loud alarm for SimpliSafe system....Love this alarm system for my small home. Great...

    Product Description

    A weatherized white wireless siren emitting a loud 105dB alarm for enhanced indoor or outdoor security.
    See all Security Camera & System Accessories
    Your price for this item is $59.99

  10. SimpliSafe - Smart Alarm Wireless Indoor Security Camera - White

    SKU: J362VFS8J2

    Product Description

    A wireless white indoor security camera with night vision, two-way audio, motion sensor, and app compatibility.
    See all Indoor Security Cameras
    Your price for this item is $111.99
    Save $38
    The previous price was $149.99
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In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.