Door, Window and Outdoor Alarms

Door and window alarms, plus shed, garage and driveway alerts for the places a kit does not cover.

  • SimpliSafe Entry Sensor 4-Pack
    Door, Window and Outdoor Alarms

    Best Door Alarms for Home Security

    Compare the best door alarms for home security, from simple chimes to app-connected sensors. Find the right alert type and coverage for your entry points.

  • HTZSAFE Driveway Alarm (2 Sensors)
    Door, Window and Outdoor Alarms

    Best Wireless Driveway Alarms

    Compare the best driveway alarms for long or short approaches, vehicle alerts, solar power and flexible chimes, with setup and buying advice.

  • HTZSAFE Driveway Alarm (2 Sensors)
    Door, Window and Outdoor Alarms

    Best Shed and Garage Alarms

    Compare shed and garage alarms for motion alerts, open-door notices and outdoor access points. Find a setup that fits your building and coverage needs.

  • Ring Window and Door Sensor 6-Pack
    Door, Window and Outdoor Alarms

    Best Window Alarm Sensors for Home Security

    Compare the best window alarm sensors for DIY security, including entry alerts, glass-break detection, vibration alarms and multi-pack options for your home.

  • Ring Alarm Contact Sensor 2-Pack
    Door, Window and Outdoor Alarms

    Door Alarm Sensors: Types, Placement and Picks

    Choose a door alarm sensor by alert type, system fit and mounting needs. Compare four picks, learn setup steps and avoid common placement mistakes.

  • SimpliSafe Entry Sensor
    Door, Window and Outdoor Alarms

    How Do SimpliSafe Entry Sensors Work?

    Learn how a SimpliSafe entry sensor detects an opening, what alerts it can send, where to place one, and how to choose sensors for your doors and windows.