Eufy Door and Window Entry Sensor, White

One battery provides monitoring for 730 days.For Doors and WindowsSmall and compact design fits onto any door or window frame.100-Decibel 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.Easy InstallationJust peel off the mounting tape and stick the sensor onto the door or window you want to monitor.