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Protect your home with the Ring Alarm Contact Sensor 2-Pack, designed to provide immediate alerts whenever doors or windows open. Featuring a slim, smaller design to enhance placement flexibility, this sensor requires no tools for quick and simple installation. Powered by long-lasting 3V CR2032 batteries, it easily mounts to any door or window frame and works seamlessly with the Ring Alarm Base Station for reliable home security.

This 2nd generation Ring Alarm Contact Sensor offers instant mobile alerts so you always know when doors or windows are opened. Its compact and slim form factor allows versatile placement throughout your home to maximize security coverage.