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Intruder Alarms

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

Protecting your home or business has never been more important, and intruder alarms offer a reliable solution to enhance your security. Explore a wide range of advanced systems designed to deter unauthorized access and provide peace of mind. Whether you're looking for simple setups or comprehensive systems with smart technology integration, you'll find options that suit various needs and budgets. Enjoy the convenience of modern features that allow you to monitor and manage your security from anywhere, ensuring that what matters most is always safeguarded.

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  1. Ring - Alarm Glass Break Sensor (2-Pack) - White - Front_Zoom
    Top comment

    "I really like the Ring glass alarm; it works very well when I drop a metal bowl or make any loud sound like glasses, the alarm is on right away....They connected to the alarm easily."

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    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.
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    Top comment

    "I really like the Ring glass alarm; it works very well when I drop a metal bowl or make any loud sound like glasses, the alarm is on right away....They connected to the alarm easily."

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    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.
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    Your price for this item is $69.99
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  2. SimpliSafe - Motion Sensor - White - Front_Zoom

    Model: CA001-01RUS
    SKU: 6543525
    Top comment

    "I have not had a false alarm yet. There is no sensitvity switch on the new sensor. ...CONs: Not nearly as loud as the Honeywell - needed to purchase a remote alarm speaker. Alarm is a typical siren as opposed to more attention getting lower pitched Honeywell. "

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    Product Description

    Detect intruders with SimpliSafe’s high-performance motion sensor. Engineered to tell the difference between people and pets, so if the alarm goes off, you can be confident it’s real. With a 90º field of view and 35 ft. range, it protects an entire room from a single location. Plus, you get fast alerts sent right to your phone when motion is detected so you always know what’s happening at home. And if you have a 24/7 professional monitoring plan—our agents are always ready to send help to your home when an alarm is triggered.
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    Top comment

    "I have not had a false alarm yet. There is no sensitvity switch on the new sensor. ...CONs: Not nearly as loud as the Honeywell - needed to purchase a remote alarm speaker. Alarm is a typical siren as opposed to more attention getting lower pitched Honeywell. "

    See all customer reviews

    Product Description

    Detect intruders with SimpliSafe’s high-performance motion sensor. Engineered to tell the difference between people and pets, so if the alarm goes off, you can be confident it’s real. With a 90º field of view and 35 ft. range, it protects an entire room from a single location. Plus, you get fast alerts sent right to your phone when motion is detected so you always know what’s happening at home. And if you have a 24/7 professional monitoring plan—our agents are always ready to send help to your home when an alarm is triggered.
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    Your price for this item is $34.99

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  3. ecobee - SmartSensor for Doors and Windows (2-Pack) - White - Front_Zoom
    Top comment

    "I would like an automatic option for siren once motion triggered, just in case I miss the message and there is an actual intruder...Lacking one key feature - Automatic Alarm Trigger...The only downside is the sensors are unable to automatically trigger the security alarm. Instead you are prompted to manually trigger the alarm. 5 stars if this is resolved in an update in the near future!"

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    Product Description

    Get even more peace of mind with SmartSensor for doors and windows. They protect your home with instant notifications when an entryway or access point is opened or closed. With an ecobee Smart Security subscription, you can unlock even more and get instant alerts when any unexpected motion is detected in your home.
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    Top comment

    "I would like an automatic option for siren once motion triggered, just in case I miss the message and there is an actual intruder...Lacking one key feature - Automatic Alarm Trigger...The only downside is the sensors are unable to automatically trigger the security alarm. Instead you are prompted to manually trigger the alarm. 5 stars if this is resolved in an update in the near future!"

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    Product Description

    Get even more peace of mind with SmartSensor for doors and windows. They protect your home with instant notifications when an entryway or access point is opened or closed. With an ecobee Smart Security subscription, you can unlock even more and get instant alerts when any unexpected motion is detected in your home.
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    Your price for this item is $79.99

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  4. Ring - Alarm Motion Detector (2nd Gen) (1-Pack) - White - Front_Zoom
    Top comment

    "Works great on my second floor to watch for intruders....Excellent device to get an intruder alert for your house."

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    Product Description

    Ring Alarm Motion Detector expands your Ring Alarm and adds an extra layer of security to your home. When your Ring Alarm system is armed, the Motion Detector sends instant alerts to your phone and tablet whenever motion is detected at home. The Motion Detector is a simple addition to your Ring Alarm that installs in minutes. Simply place your Motion Detector in a corner of any room in your home, connect it to your Ring Alarm Base Station, and you’re all set up!
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    Top comment

    "Works great on my second floor to watch for intruders....Excellent device to get an intruder alert for your house."

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    Product Description

    Ring Alarm Motion Detector expands your Ring Alarm and adds an extra layer of security to your home. When your Ring Alarm system is armed, the Motion Detector sends instant alerts to your phone and tablet whenever motion is detected at home. The Motion Detector is a simple addition to your Ring Alarm that installs in minutes. Simply place your Motion Detector in a corner of any room in your home, connect it to your Ring Alarm Base Station, and you’re all set up!
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    Your price for this item is $29.99

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  5. Night Owl - Outdoor Wired Floodlight Deterrence 3MP HD+ Camera with 2-Way Audio - White - Front_Zoom

    Product Description

    Illuminate your home security with our U.S. designed and engineered 3MP HD+ Floodlight Deterrence Camera. With 2500 lumens, the motion-activated floodlights turn on when a human or vehicle is detected to provide detailed visibility and deter potential intruders. This advanced detection technology means you'll only be alerted to events that matter, reducing false alarms and ensuring a focused approach to security. With voice alerts, a formidable siren and two-way audio, take command of your surroundings. The camera is wired for power using your new or existing outdoor wiring but wirelessly connects to your router or a compatible Night Owl recorder. This set-and-forget setup means your camera will stay powered 24/7 with no need to recharge batteries. Built with a sturdy metal housing to withstand the elements, this weather-resistant camera is ready for the outdoors and can handle extreme heat and cold, rain or sleet. Our metal design ensures greater durability in harsh outdoor conditions.
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    Product Description

    Illuminate your home security with our U.S. designed and engineered 3MP HD+ Floodlight Deterrence Camera. With 2500 lumens, the motion-activated floodlights turn on when a human or vehicle is detected to provide detailed visibility and deter potential intruders. This advanced detection technology means you'll only be alerted to events that matter, reducing false alarms and ensuring a focused approach to security. With voice alerts, a formidable siren and two-way audio, take command of your surroundings. The camera is wired for power using your new or existing outdoor wiring but wirelessly connects to your router or a compatible Night Owl recorder. This set-and-forget setup means your camera will stay powered 24/7 with no need to recharge batteries. Built with a sturdy metal housing to withstand the elements, this weather-resistant camera is ready for the outdoors and can handle extreme heat and cold, rain or sleet. Our metal design ensures greater durability in harsh outdoor conditions.
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    Your price for this item is $42.99
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    The comparable value price is $139.99

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  6. Night Owl - 2-Camera Indoor/Outdoor Wired 1080p HD Spotlight Cameras with Audio - White/Black - Front_Zoom
    Top comment

    "very loud when I trigger the alarm"

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    Product Description

    Proudly American, Night Owl is excited to offer our U.S. designed and engineered Wired 1080p HD Add On Spotlight Cameras with Preset Voice Alerts and Built-In Camera Siren. Each camera has 1-way audio (speaker) which works with our built-in siren and preset voice alerts. When used with a compatible recorder, you can easily activate the built-in siren, startling intruders and sending them packing. Have a guest but can’t get to them? Use a preset voice alert to let them know! Smart Detection Technology including Human Detection, Facial Capture, and Vehicle Alerts reduce the risk of false alarms, keeping you safe and well protected. Facial Capture lets you see who is on your property by snapping a photo and sending the image to your Smart Device (DVR sold separately). Motion-activated spotlights flood your yard with bright lights when human motion is detected, instantly warding off trespassers. These weather-resistant indoor/outdoor cameras provide the coverage you need for your home or business with up to 100 ft. of Night Vision and wide-angle viewing. A secure wired connection delivers uninterrupted viewing and recording, providing you with true around the clock protection. When you connect these add on cameras to your existing recorder, our free remote viewing app for iOS and Android Smart Devices keeps you connected and provides easy access to your recordings. NOTE: These cameras are not for standalone use and must be added to a compatible Night Owl BTD2 or BTD8 Series DVR.
    See all Indoor Security Cameras
    Top comment

    "very loud when I trigger the alarm"

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    Product Description

    Proudly American, Night Owl is excited to offer our U.S. designed and engineered Wired 1080p HD Add On Spotlight Cameras with Preset Voice Alerts and Built-In Camera Siren. Each camera has 1-way audio (speaker) which works with our built-in siren and preset voice alerts. When used with a compatible recorder, you can easily activate the built-in siren, startling intruders and sending them packing. Have a guest but can’t get to them? Use a preset voice alert to let them know! Smart Detection Technology including Human Detection, Facial Capture, and Vehicle Alerts reduce the risk of false alarms, keeping you safe and well protected. Facial Capture lets you see who is on your property by snapping a photo and sending the image to your Smart Device (DVR sold separately). Motion-activated spotlights flood your yard with bright lights when human motion is detected, instantly warding off trespassers. These weather-resistant indoor/outdoor cameras provide the coverage you need for your home or business with up to 100 ft. of Night Vision and wide-angle viewing. A secure wired connection delivers uninterrupted viewing and recording, providing you with true around the clock protection. When you connect these add on cameras to your existing recorder, our free remote viewing app for iOS and Android Smart Devices keeps you connected and provides easy access to your recordings. NOTE: These cameras are not for standalone use and must be added to a compatible Night Owl BTD2 or BTD8 Series DVR.
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    Your price for this item is $99.99

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  7. Ring - Alarm Pro Home Security Kit 14 Pieces - White - Front_Zoom
    Top comment

    "Good alarm...Never a problem with the alarm. Alarm is very loud when it goes off....The siren is very loud and will deter an intruder"

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    Product Description

    Alarm Pro Security Kit, 14-Piece combines whole-home protection, a fast eero Wi-Fi 6 router, and network security in one. Protect 8 windows or doors and add motion detection to 2 hallways or rooms and get real-time alerts in the Ring app when your sensors are triggered. Enjoy wifi coverage of up to 1500 sq. ft.(1) For total peace of mind, get 24/7 Professional Monitoring with emergency police, fire, or medical support(2) by subscribing to a compatible Ring Protect subscription, sold separately.
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    Top comment

    "Good alarm...Never a problem with the alarm. Alarm is very loud when it goes off....The siren is very loud and will deter an intruder"

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    Product Description

    Alarm Pro Security Kit, 14-Piece combines whole-home protection, a fast eero Wi-Fi 6 router, and network security in one. Protect 8 windows or doors and add motion detection to 2 hallways or rooms and get real-time alerts in the Ring app when your sensors are triggered. Enjoy wifi coverage of up to 1500 sq. ft.(1) For total peace of mind, get 24/7 Professional Monitoring with emergency police, fire, or medical support(2) by subscribing to a compatible Ring Protect subscription, sold separately.
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    Your price for this item is $379.99

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  8. Ring - Alarm Security Kit 5-Piece (2nd Gen) - White - Front_Zoom
    Top comment

    "Ring Alarm...Ring alarm is perfect for our office! Love the product and would recommend to anyone looking home or business alarm system....I love it, Great purchase. I bought a door bell alarm + extra door alarms and it all works seamlessly"

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    Product Description

    The perfect starter kit for condos, apartments or small homes or businesses up to 1,000 square feet. Protect 1 window or door, add motion detection to 1 hallway or room, and get real-time alerts in the Ring app when your sensors are triggered. Arm and disarm your system from the Keypad. For total peace of mind, get 24/7 Professional Monitoring with emergency police, fire, or medical support *with a compatible Ring Protect subscription, sold separately.
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    Top comment

    "Ring Alarm...Ring alarm is perfect for our office! Love the product and would recommend to anyone looking home or business alarm system....I love it, Great purchase. I bought a door bell alarm + extra door alarms and it all works seamlessly"

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    Product Description

    The perfect starter kit for condos, apartments or small homes or businesses up to 1,000 square feet. Protect 1 window or door, add motion detection to 1 hallway or room, and get real-time alerts in the Ring app when your sensors are triggered. Arm and disarm your system from the Keypad. For total peace of mind, get 24/7 Professional Monitoring with emergency police, fire, or medical support *with a compatible Ring Protect subscription, sold separately.
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    Your price for this item is $199.99

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  9. Ring - Alarm Pro Home Security Kit 8 Pieces - White - Front_Zoom
    Top comment

    "Weak Alarm...Alarm not loud to scare off any intruder. False sense of protection...Very good alarm system...Love these alarms. This is my third one for my properties. Very easy to install,moniter and connect to internet"

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    Product Description

    Alarm Pro Security Kit, 8-Piece combines whole-home protection, a fast eero Wi-Fi 6 router, and network security in one. Protect 4 windows or doors and add motion detection to 1 hallway or room and get real-time alerts in the Ring app when your sensors are triggered. Enjoy wifi coverage of up to 1500 sq. ft.* For total peace of mind, get 24/7 Professional Monitoring with emergency police, fire, or medical support** by subscribing to a compatible Ring Protect subscription, sold separately.
    See all Security Camera & System Accessories
    Top comment

    "Weak Alarm...Alarm not loud to scare off any intruder. False sense of protection...Very good alarm system...Love these alarms. This is my third one for my properties. Very easy to install,moniter and connect to internet"

    See all customer reviews

    Product Description

    Alarm Pro Security Kit, 8-Piece combines whole-home protection, a fast eero Wi-Fi 6 router, and network security in one. Protect 4 windows or doors and add motion detection to 1 hallway or room and get real-time alerts in the Ring app when your sensors are triggered. Enjoy wifi coverage of up to 1500 sq. ft.* For total peace of mind, get 24/7 Professional Monitoring with emergency police, fire, or medical support** by subscribing to a compatible Ring Protect subscription, sold separately.
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    Your price for this item is $299.99

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  10. Night Owl - Wired Add On 4K Ultra HD Spotlight Cameras with Audio (2-Pack) - White/Black - Front_Zoom

    Product Description

    Proudly American, Night Owl is excited to offer our U.S. designed and engineered wired 4K UHD add on spotlight cameras with preset voice alerts and built-in camera siren. Each camera has 1-way audio (speaker) which works with our built-in siren and preset voice alerts. When used with a compatible recorder, you can easily activate the built-in siren, startling intruders and sending them packing. Have a guest but can’t get to them? Use a preset voice alert to let them know! Smart detection technology including human detection, facial capture, and vehicle alerts reduce the risk of false alarms, keeping you safe and well protected. Facial capture lets you see who is on your property by snapping a photo and sending the image to your smart device (DVR sold separately). Motion-activated spotlights flood your yard with bright lights when human motion is detected, instantly warding off trespassers. These weather-resistant indoor/outdoor cameras provide the coverage you need for your home or business with up to 100 ft. of night vision and wide-angle viewing. A secure wired connection delivers uninterrupted viewing and recording, providing you with true around the clock protection. When you connect these add on cameras to your existing recorder, our free remote viewing app for iOS and Android smart devices keeps you connected and provides easy access to your recordings. NOTE: These cameras are not for standalone use and must be added to a compatible Night Owl BTD8 series DVR.
    See all Security Camera Systems

    Product Description

    Proudly American, Night Owl is excited to offer our U.S. designed and engineered wired 4K UHD add on spotlight cameras with preset voice alerts and built-in camera siren. Each camera has 1-way audio (speaker) which works with our built-in siren and preset voice alerts. When used with a compatible recorder, you can easily activate the built-in siren, startling intruders and sending them packing. Have a guest but can’t get to them? Use a preset voice alert to let them know! Smart detection technology including human detection, facial capture, and vehicle alerts reduce the risk of false alarms, keeping you safe and well protected. Facial capture lets you see who is on your property by snapping a photo and sending the image to your smart device (DVR sold separately). Motion-activated spotlights flood your yard with bright lights when human motion is detected, instantly warding off trespassers. These weather-resistant indoor/outdoor cameras provide the coverage you need for your home or business with up to 100 ft. of night vision and wide-angle viewing. A secure wired connection delivers uninterrupted viewing and recording, providing you with true around the clock protection. When you connect these add on cameras to your existing recorder, our free remote viewing app for iOS and Android smart devices keeps you connected and provides easy access to your recordings. NOTE: These cameras are not for standalone use and must be added to a compatible Night Owl BTD8 series DVR.
    See all Security Camera Systems
    Your price for this item is $139.99
    The comparable value price is $159.99

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