- 2-year battery life - For Doors and Windows - 100 decibel siren Please note: Requires Homebase to make use of this item. Add to an existing set up here. 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 100-decibel siren will go off on the HomeBase (can be disabled). Features 2-Year battery life:One CR-123A 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 youll 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. Included:3 x Entry Sensors, 3 x Magnetic Base, 3 x Mounting Screws, Instruction Manual Please note:requires Homebase
