eufy Security Entry Sensor, Detects Opened and Closed Doors or Windows, Door Monitoring, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor Use Only, Requires HomeBase, 24/7 Monitoring Optional

From the brand

At eufy we believe all great smart home products need to be thoughtfully built from the start. From whole-home security to smart cleaning solutions, eufy’s technology brings you expert protection and deep cleaning that’s tailored to your lifestyle and creates human-first technology that enlivens the lives of everyone around you.

Because care is what makes a house a home, everything we build is built with care for you.

eufy, Built with Care

Bring the Magic Home with eufy

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2-year Battery Life: One battery provides 800 days of monitoring.
For Doors And Windows: Compact and versatile design fits onto any door or window frame. Requires eufy Security HomeBase.
100-decibel Siren: Enable or disable siren protection, which triggers a 100-decibel siren on HomeBase, and sends an alert to your smartphone when forced entry is detected.
Optional 24/7 Protection Service: New optional 24/7 professional monitoring service is now available for 24/7 emergency police, fire and medical response when your alarm system is triggered.
What’s Included: Entry Sensor, CR123A Battery, Magnet, 3 x Mounting Screws, Owner’s Manual.