Ring Alarm Contact Sensor (2nd Gen) (2-Pack) White 4SD2SZ-0EN0 - Best Buy

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When armed, the Ring Alarm security kit sends notifications to your phone and tablet whenever doors or windows open and when motion is detected at home. It's fully customizable and expands to fit any house or apartment.

Ring 2nd Gen Alarm Security Kit 5-Piece

ring-alarm - Best Buy

Ring Home Alarms & Sensors at

Expand your Ring Alarm system to secure each door and window in your home, and get alerts as soon as they open. Ring Alarm Contact Sensors easily mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm Base Station and receive mobile alerts from the Ring app whenever your doors or windows open. You'll always be the first to know when something's ajar.

Ring Alarm Contact Sensor 2-Pack (2nd Gen)

Ring Alarm Contact Sensor (2nd Gen) : Tools & Home Improvement

Ring Alarm Contact Sensor 2-pack (2nd Gen) : Tools & Home Improvement

Ring Alarm Door/Window Contact Sensor (2-Pack) (2nd Gen) 4SD2SZ-0EN0 - The Home Depot

Expand your Ring Alarm system to secure each door and window in your home, and get alerts as soon as they open. Ring Alarm Contact Sensors easily mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm Base Station and receive mobile alerts from the Ring app whenever your doors or windows open. You'll always be the first to know when something's ajar.

Ring Alarm Contact Sensor 2-Pack (2nd Gen)

ring-alarm - Best Buy