The Best Door & Window Alarms 2026

1. Ring - Alarm Outdoor Contact Sensor 2-pack - Gray

Sit back and let one of our professional installers connect a networked audio device (and an audio hub/bridge, if you have one) to your existing Wi-Fi and audio system. They'll also connect the device to your speakers, test things out and show you how it all works.

Help secure outdoor gates, sheds, guesthouses, and windows with Ring Alarm Outdoor Contact Sensors. 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.

2. SimpliSafe - Panic Button - White

Instantly trigger your alarm and dispatch police; silent panic; battery pre-instaled; simple installation

Take instant action against burglary and other emergency situations with this SimpliSafe panic button. When pressed, it triggers your security system’s alarm to immediately notify SimpliSafe or the police of your urgent call for help. Opt for the silent feature of this SimpliSafe panic button to discreetly signal for help without the intruder’s knowledge.

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

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

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.*

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

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

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.*

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

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

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.*

6. Aqara - P2 Door and Window Sensor- Matter Natively Support, Need Matter Border Router, Remote Alarm and Local Automation - White

Aqara Door and Window Sensor P2 not only incorporates all the advanced automation and security features Aqara is known for, but also gives users the option to connect it directly to third-party Thread border routers, such as smart speakers, and use all the benefits of the Matter smart home standard.

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

Aqara Door and Window Sensor T1 detects the open and close state of doors or windows through the distance between the sensor unit and the magnet. It consumes a minimal amount of energy. No tools are required, just stick it to the desired place and use it in a dozen of possible use cases.

8. SimpliSafe - Glassbreak Sensor - White

Precise sound detection; battery pre-installed; simple installation

Act fast against burglaries with this SimpliSafe glass break sensor. It triggers an alarm if it detects the sound of shattering glass within its 20-foot range, providing reliable security even when no motion detector is used. This SimpliSafe glass break sensor utilizes detection algorithm and digital signal processing technologies for accurate sound recognition.

9. Arlo - Wireless Outdoor Siren - White

Extend your security to the outdoors by discouraging intruders with a loud wire-free siren, featuring weather-resistant construction, built in strobe and adjustable volume settings. SecureLink enables extended range and prolonged battery life.

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

Works with conventional (2H/2C), heat pump (4H/2C), gas, oil, electric and dual fuel; Apple® HomeKit-enabled; Wi-Fi capability; Compatible with most 24V heating and cooling systems; 7-day schedule; 3.5" LCD touch screen

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.