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.
Q: Is the battery replaceable in this detector?
A: Yes, the battery is replaceable in this detector.
Q: Does this device require other products to operate?
A: Yes, this device requires Ring Alarm or Ring Alarm Pro to operate.
Q: What kind of battery does the motion detector use?
A: The motion detector uses AA batteries.
Q: How many motion detectors are included in the package?
A: There are two motion detectors included in the package.
Q: Can this motion detector work with Alexa?
A: Yes, this motion detector works with Amazon Alexa.
Q: Does this motion detector require a subscription?
A: Yes, this motion detector requires a subscription for in-app features and digital notifications.
Q: What is the maximum wireless range of this device?
A: The maximum wireless range is 250 feet.
Q: Can I buy these individually and use them without buying any other ring products?
A: You would need a ring base station. You would then be able to control the sensor with the ring app on your phone.
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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.

Cover the entry points that matter most. Safeguard doors, windows, and more with protection that works where others can’t. Ring Sensors are built to break free from traditional systems with no need for hubs or the limited reach of WiFi. On Amazon Sidewalk, these devices stay connected for reliable protection day and night.1 Add more devices anytime to expand your coverage as your home security needs grow.

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.

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.