Eufy’s motto of “Smart Home Simplified” is what drives us to build easy-to-use smart home devices and appliances that are designed to enhance your life. 2-year battery life with one battery provides monitoring for 730 days. A 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 HomeBas. One will be notified instantly on their smartphone. Easy Installation as one just need to peel off the mounting tape and stick the sensor onto the door or window you want to monitor.