Eufy Wire-Free Entry Sensor(Add On)

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Protect Your Doors and Windows from Break-Ins with Eufy Security Entry Sensor. Once a window or door is ajar by 1.5 inch, an alert will be sent to your smartphone, and a powerful s iren will go off on the HomeBase (can be disabled). Requires Eufy Security HomeBase. Easy InstallationJust peel off the mounting tape and stick or screw the sensor onto the door or window you want to monitor. 2-Year Battery LifeOne CR-123A battery provides monitoring for 730 days. For Doors and WindowsSmall and compact design fits onto any door or window frame. Powerful SirenIf 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. Key Features Door or Window open detection Triggers intruder-siren on HomeBase* Sub-1G connection with HomeBase* Up to 2 years battery life Easy Installation Show more