Eufy by Anker Alarm System Entry Sensor T8900

✔️2-YEAR BATTERY LIFE: One battery provides monitoring for 730 days.

✔️FOR DOORS AND WINDOWS: Small and compact design fits onto any door or window frame.

✔️100-DECIBEL SIREN: If a forced entry is detected, a siren as loud as a jackhammer will be triggered on HomeBase, and you’ll be notified instantly on your smartphone.

✔️EASY INSTALLATION: Just peel off the mounting tape and stick the sensor onto the door or window you want to monitor.

✔️What's Included: Entry Sensor, CR123A Battery, Magnet, 3 x Mounting Screws, Owner's Manual