Eufy Entry Sensor - Door and window sensor - wireless - white

Suitable for doors and windows. Small and compact design fits onto any door or window frame. Easy installation. Just peel off the mounting tape and stick the sensor onto the door or window you want to monitor. 2-year battery life. One battery provides monitoring for 730 days. 100-decibel siren. If a forced entry is detected, a siren as loud as a jackhammer will be triggered on HomeBase, and you will be notified instantly on your smartphone.