4th of July Sale.Ends 7/10. Limited quantities. No rainchecks.Shop now

Skip to content
Main Content

window alarm sensor

No content

Best Buy customers often prefer the following products when searching for 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.

Main Results
  1. Ring - Alarm Security Kit 9-Piece (2nd Gen) - White - Front_Zoom
    Top comment

    "I tripped the motion sensor on purpose to test it and the alarm is as loud as advertised. ...Rin alarm Pro"

    See all customer reviews

    Product Description

    Help secure your home against break-ins, and more, with Ring Alarm. When armed, Ring Alarm's siren sounds whenever doors or windows open and when motion is detected at home. Level-up your protection with a Ring Protect Pro subscription, sold separately, to get real-time alerts in the Ring App when your Alarm is triggered*, on-demand emergency support with optional Alarm Professional Monitoring**, and other benefits that keep your security ready for anything.
    See all Home Security Systems
    Top comment

    "I tripped the motion sensor on purpose to test it and the alarm is as loud as advertised. ...Rin alarm Pro"

    See all customer reviews

    Product Description

    Help secure your home against break-ins, and more, with Ring Alarm. When armed, Ring Alarm's siren sounds whenever doors or windows open and when motion is detected at home. Level-up your protection with a Ring Protect Pro subscription, sold separately, to get real-time alerts in the Ring App when your Alarm is triggered*, on-demand emergency support with optional Alarm Professional Monitoring**, and other benefits that keep your security ready for anything.
    See all Home Security Systems
    See all Home Security Systems
  2. Ring - Alarm Outdoor Contact Sensor - Gray - Front_Zoom

    Model: B0923BK77S
    SKU: 6481972
    Top comment

    "Outdoor sensor perfect for gate...Easy to setup and works well with the ring alarm system....Great build sensors...This sensor will give you a piece of mind adding sensors to your fence gates even to the shed, this sensors are well build, weather resistant"

    See all customer reviews

    Product Description

    Help secure outdoor gates, sheds, guesthouses, and windows with Ring Alarm Outdoor Contact Sensor. Get mobile alerts when your outdoor gate opens, or set the sensor to automatically trigger your Ring Alarm siren when armed in Home or Away mode. Outdoor Contact Sensor comes with mounting tape and screws for easy installation on most surfaces.
    See all Door & Window Alarms
    Top comment

    "Outdoor sensor perfect for gate...Easy to setup and works well with the ring alarm system....Great build sensors...This sensor will give you a piece of mind adding sensors to your fence gates even to the shed, this sensors are well build, weather resistant"

    See all customer reviews

    Product Description

    Help secure outdoor gates, sheds, guesthouses, and windows with Ring Alarm Outdoor Contact Sensor. Get mobile alerts when your outdoor gate opens, or set the sensor to automatically trigger your Ring Alarm siren when armed in Home or Away mode. Outdoor Contact Sensor comes with mounting tape and screws for easy installation on most surfaces.
    See all Door & Window Alarms
    See all Door & Window Alarms
  3. Philips - Hue Secure Contact Sensor - Black - Front_Zoom

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors
    See all Home Alarms & Sensors
  4. Philips - Hue Secure Contact Sensor - 2PK - Black - Front_Zoom

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors
    See all Home Alarms & Sensors
  5. Philips - Hue Secure Contact Sensor - 2PK - White - Front_Zoom

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors
    See all Home Alarms & Sensors
  6. Philips - Hue Secure Contact Sensor - White - Front_Zoom

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors

    Product Description

    The Philips Hue Secure contact sensor helps you feel safer when you’re at home and when you’re away. Its slim and flexible design comes in both black and white. The sensor features an adhesive backing, allowing you to place it almost anywhere, such as doors, windows, cabinets, or even safes. The smart design also lets you place the sensor's magnet on the left, right, or top of the sensor's body to ensure the magnet and sensor always have proper contact. Adjust your settings in the Hue app to receive motion alerts when the sensor is opened — or trigger a light alarm to deter potential intruders with a tap in the Hue app.
    See all Home Alarms & Sensors
    See all Home Alarms & Sensors
  7. Ring - Alarm Glass Break Sensor - White - Front_Zoom

    Model: B08TG6NCTS
    SKU: 6492193
    Top comment

    "Provides peace of mind against any window break ins. One sensor can cover multiple windows as long as they are within the range of the sensor....Having senors on windows is great but this glass senor adds a extra protection. "

    See all customer reviews

    Product Description

    Monitor glass windows and doors for break-in attempts with Ring Alarm Glass Break Sensor. Using AI technology, the sensor detects the sound of glass breaking up to 25 feet. You’ll receive notifications whenever breaking glass is detected, or receive a call from our monitoring center if you have enrolled in professional monitoring* with a Ring Protect Pro subscription, sold separately.** Requires Ring Alarm or Ring Alarm Pro, both sold separately.
    See all Door & Window Alarms
    Top comment

    "Provides peace of mind against any window break ins. One sensor can cover multiple windows as long as they are within the range of the sensor....Having senors on windows is great but this glass senor adds a extra protection. "

    See all customer reviews

    Product Description

    Monitor glass windows and doors for break-in attempts with Ring Alarm Glass Break Sensor. Using AI technology, the sensor detects the sound of glass breaking up to 25 feet. You’ll receive notifications whenever breaking glass is detected, or receive a call from our monitoring center if you have enrolled in professional monitoring* with a Ring Protect Pro subscription, sold separately.** Requires Ring Alarm or Ring Alarm Pro, both sold separately.
    See all Door & Window Alarms
    See all Door & Window Alarms
  8. Ring - Alarm Contact Sensor (2nd Gen) (1-Pack) - White - Front_Zoom
    Top comment

    "Alarm sensor...This works great with my ring alarm 2. It hooks up to my window. Easy install...Must have if you use the ring alarm. Device price"

    See all customer reviews

    Product Description

    Expand your Ring Alarm system to secure each door and window in your home, and hear chirps as soon as they open. Ring Alarm Contact Sensors mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm and receive mobile alerts from the Ring App so you’ll always be the first to know when something’s ajar. Ring Protect subscription required, sold separately.*
    See all Door & Window Alarms
    Top comment

    "Alarm sensor...This works great with my ring alarm 2. It hooks up to my window. Easy install...Must have if you use the ring alarm. Device price"

    See all customer reviews

    Product Description

    Expand your Ring Alarm system to secure each door and window in your home, and hear chirps as soon as they open. Ring Alarm Contact Sensors mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm and receive mobile alerts from the Ring App so you’ll always be the first to know when something’s ajar. Ring Protect subscription required, sold separately.*
    See all Door & Window Alarms
    See all Door & Window Alarms
  9. Ring - Alarm Glass Break Sensor (2-Pack) - White - Front_Zoom
    Top comment

    "Ring window brake sensors...Like the ring, brake window sensors wonderful company...Ring Glass Break Sensors...Very glad ring finally released glass breaks, great compliment to the other alarm sensors."

    See all customer reviews

    Product Description

    Monitor glass windows and doors for break-in attempts with Ring Alarm Glass Break Sensor. Using AI technology, the sensor detects the sound of glass breaking up to 25 feet. You’ll receive notifications whenever breaking glass is detected, or receive a call from our monitoring center if you have enrolled in professional monitoring* with a Ring Protect Pro subscription, sold separately.** Requires Ring Alarm or Ring Alarm Pro, both sold separately.
    See all Door & Window Alarms
    Top comment

    "Ring window brake sensors...Like the ring, brake window sensors wonderful company...Ring Glass Break Sensors...Very glad ring finally released glass breaks, great compliment to the other alarm sensors."

    See all customer reviews

    Product Description

    Monitor glass windows and doors for break-in attempts with Ring Alarm Glass Break Sensor. Using AI technology, the sensor detects the sound of glass breaking up to 25 feet. You’ll receive notifications whenever breaking glass is detected, or receive a call from our monitoring center if you have enrolled in professional monitoring* with a Ring Protect Pro subscription, sold separately.** Requires Ring Alarm or Ring Alarm Pro, both sold separately.
    See all Door & Window Alarms
    See all Door & Window Alarms
  10. Ring - Alarm Range Extender (2nd Gen) - White - Front_Zoom

    Model: 4AR1SZ-0EN0
    SKU: 6403962
    Top comment

    "Great for boosting the signal to contact sensors...Had trouble getting my detached shop to find my contact sensor. I plug this into tje shop to help boost the signal and it now works....Worked as described. Extended my alarm signal enough so I was able to add a sensor on my garage on other side of house."

    See all customer reviews

    Product Description

    Add Range Extenders throughout your home to extend the signal from your Ring Alarm Base Station to all its components, so you can make sure your entire system stays online.*Requires Ring Alarm Security Kit (Gen 2)
    See all Home Security Accessories
    Top comment

    "Great for boosting the signal to contact sensors...Had trouble getting my detached shop to find my contact sensor. I plug this into tje shop to help boost the signal and it now works....Worked as described. Extended my alarm signal enough so I was able to add a sensor on my garage on other side of house."

    See all customer reviews

    Product Description

    Add Range Extenders throughout your home to extend the signal from your Ring Alarm Base Station to all its components, so you can make sure your entire system stays online.*Requires Ring Alarm Security Kit (Gen 2)
    See all Home Security Accessories
    See all Home Security Accessories
No content
No content