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home security & monitoring

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home alarms & sensors

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motion sensors & detectors

Smart Window Sensors

Smart window sensors are revolutionizing the way we secure and manage our homes, offering a seamless blend of convenience and peace of mind. These innovative devices provide real-time alerts and insights, helping you monitor your windows with ease whether you're at home or on the go. Designed to integrate effortlessly with your smart home ecosystem, they enhance security while also contributing to energy efficiency by alerting you to open windows when heating or cooling systems are in use. Explore the possibilities of enhanced home automation and take control of your living space with the latest in smart window sensor technology.

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  1. Ring - Alarm Contact Sensor (2nd Gen) (1-Pack) - White

    SKU: J36CLVSCTR

    Product Description

    A white, battery-powered contact sensor that alerts you via app when doors or windows are opened.
    See all Door & Window Alarms
    Your price for this item is $14.99
    Save $5
    The previous price was $19.99

  2. Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

    SKU: J36CLVS2GR

    Product Description

    A set of six white, battery-powered sensors for easy DIY door and window security with app alerts.
    See all Door & Window Alarms
    Your price for this item is $99.99

  3. SimpliSafe - 1pack Entry Sensor - White

    SKU: J3L6GWR5Y9

    Love the multi purpose sensor...Love the fact u can use this sensor for multiple locations. Affordable cost to add extra sensors. ...Entry sensor...These sensors are small and inconspicuous. Love that...

    Product Description

    A discreet white entry sensor that easily installs on doors or windows for reliable home security monitoring.
    See all Motion Sensors & Detectors
    Your price for this item is $15.99

  4. SimpliSafe - 4pack Entry Sensor - White

    SKU: J362VFSXGR

    SimpliSafe Sensor...Easy Setup, system recognized new sensors immediately....Sensor Review...Sensors work perfectly. Easy to setup and install.

    Product Description

    A set of four white, battery-powered entry sensors for easy installation on doors or windows.
    See all Motion Sensors & Detectors
    Your price for this item is $54.99

  5. ecobee - SmartSensor for Doors and Windows (2-Pack) - White

    SKU: JXC53VLSZG

    You can find out when someone has opened a door or window with this sensor, detect motion in the house with the smart sensor, or capture them on video with the smart camera. ...Ecobee has really perfected...

    Product Description

    A white, battery-powered sensor that sends instant notifications when doors or windows are opened or closed.
    See all Door & Window Alarms
    Your price for this item is $79.99

  6. Aqara - T1 Door and Window Sensor- Requires Hub product, Supports Apple HomeKit, Alexa, Google, SmartThings - White

    SKU: JJ8RHCJJVQ

    Great sensors for HomeKit Alarm...I bought a bunch of these for my condo's doors and windows, and the sensors have performed very well. ...2/3 of The Sensors Work...Currently, Alexa routines turn Tuya/...

    Product Description

    A white battery-powered sensor that detects door or window status and supports major smart home platforms.
    See all Door & Window Alarms
    Your price for this item is $19.99

  7. MOBI - Smart Wi-Fi Door & Window Sensor - White

    SKU: J3ZVTRXVGT

    Product Description

    A white, app-compatible sensor that sends open/close alerts for doors and windows via Wi-Fi.
    See all Door & Window Alarms
    Your price for this item is $16.99

  8. Aeotec - Multipurpose Sensor

    SKU: J3GZ9GRQTC

    Product Description

    A versatile sensor that sends instant alerts when doors, windows, or cabinets are unexpectedly opened or closed.
    See all Motion Sensors & Detectors
    Your price for this item is $26.69

  9. Shelly - Blu Door/Window | Bluetooth Operated Sensor | iOS & Android App | Compatible with Google Home & Alexa | Lux and T - Black

    SKU: JV5QKCGJRW

    Product Description

    A sleek black Bluetooth sensor that detects door or window openings and sends instant alerts to your phone.
    See all Motion Sensors & Detectors
    Your price for this item is $19.99

  10. XODO - PS1 Wi-Fi Smart Door Security Sensor – Wireless Home Alarm System (2-Pack)

    SKU: JXK4Z3Y732

    Product Description

    A wireless smart door sensor pair that sends instant alerts and features motion detection with LED lighting.
    See all Motion Sensors & Detectors
    Your price for this item is $15.99
    Save $19
    The previous price was $34.99
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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.