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Window Alarm Sensor

You've heard it before: Burglars can sneak into your home through a window that's left open an inch or two. If you're worried about this, consider installing a window alarm sensor, which triggers an alarm if the window is opened and there's no one at home to hear it. The sensors are easy to install and work with any type of window, and they're sensitive enough to detect a slight breeze.

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

    SKU: J36CLVSCTR

    I love the convenience of the whole system and the cost to have this system is very cost effective and...Ring alarm is the best!...Great

    Product Description

    A white, battery-powered contact sensor that alerts you via app when doors or windows are opened.
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    Your price for this item is $14.99

  2. FEIT ELECTRIC - Battery Powered Wi-Fi Smart Window Sensor - White

    SKU: J7C555P3QP

    Product Description

    A battery-powered white sensor that alerts your phone to door or window openings and tampering.
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    Your price for this item is $35.48
    Save $2
    The previous price was $38.10

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

    SKU: JJ8RHCJJVQ

    Love it!😍...Aqara has some of the best smart home products on the market connecting easily to Apple home or any ecosystem

    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

  4. Ring - Window & Door Sensor Instant notifications on Amazon Sidewalk, no base station needed, Pro Monitoring (sold separately) - White

    SKU: J39TLSQTZ2

    Product Description

    A battery-powered white sensor providing instant entry alerts via Amazon Sidewalk, no hub required.
    See all Door & Window Alarms
    Your price for this item is $29.99

  5. SwamCam - Door & Window Sensor Certified to UL2017 for Pool Gates & All Doors, Works only w/SwamCam System or Hub System - White

    SKU: J3Q5QYFWXP

    Product Description

    A white, battery-powered sensor that wirelessly alerts you to door or window entry when paired with SwamCam.
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    Your price for this item is $54.95

  6. SwamCam - Door & Window Sensor Certified to UL2017 for Pool Gates & All Doors, Works only w/SwamCam System or Hub System - White

    SKU: J3Q5QRSWLJ

    Product Description

    A white, water-resistant wireless sensor that triggers instant alarms and phone alerts for enhanced entry protection.
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    Your price for this item is $99.95

  7. Ring - Window-Door Sensor Instant notifications on Amazon Sidewalk, no base station needed, Pro Monitoring sold separately 2pk - White

    SKU: J39TLSSTFT

    Product Description

    A battery-powered white sensor pair delivers instant entry alerts via Amazon Sidewalk, no hub required.
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    Your price for this item is $49.99

  8. Ring - Window-Door Sensor Instant notifications on Amazon Sidewalk, no base station needed, Pro Monitoring sold separately 6pk - White

    SKU: J39TLSQJV2

    Product Description

    A set of six white battery-powered sensors providing instant entry alerts via Amazon Sidewalk, no hub required.
    See all Door & Window Alarms
    Your price for this item is $139.99

  9. TECKNET - Door & Window Alarm for Kids Safety, Smart Voice Alert, 4-Level Volume, Fridge/Pool Sensor, Home Security

    SKU: CL2PYLZKZ7

    Product Description

    A door alarm with four modes, 65–110dB volume, flashing red light, IP44 protection, and adhesive installation.
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    Your price for this item is $36.99

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

    SKU: J36CLVSCW6

    Great sensors for entry points...These work great with the main ring alarm base station....I also love how easy they are to install and get up and running on the app....It’s also great to be able to buy...

    Product Description

    A pair of easy-to-install white sensors that alert you via app when doors or windows open.
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    Your price for this item is $54.44
    Save $12
    The previous price was $66.44
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FAQ

A window alarm sensor typically detects the opening or breaking of a window using magnetic contact or vibration technology. When the window is opened or tampered with, the sensor triggers an alarm to alert you of potential unauthorized entry.

Yes, many window alarm sensors are compatible with popular smart home systems, allowing you to receive notifications and control the sensors remotely through a mobile app or smart hub.

Most window alarm sensors are designed for easy DIY installation, often featuring adhesive backing or simple mounting hardware. Detailed instructions are usually included to help you set up the device quickly.

Many window alarm sensors are battery-operated, making them wireless and easy to place anywhere on your windows. Some models may include batteries in the package or indicate the type required.

Yes, window alarm sensors are generally versatile and can be installed on various window types, including sliding, casement, and double-hung windows. Always check the product specifications for compatibility with your specific window style.