✅ Vibration Detection: Detects any vibrations, providing an extra layer of security. ✅ Concealed Emergency SOS Button: Instantly trigger the alarm with a discreet SOS button for -immediate response in emergencies. ✅ Alarm Indicator: Stay informed with a clear alarm indicator LED light located in the center of the vibration sensor. ✅ Works with the OSI Alarm System Gen 2 ✅ Easy Installation: Quickly and easily install the sensor on any surface using the included 3M tape. ✅ Long-lasting Power: Powered by a 12V23A alkaline battery for extended use. Enhance your home security with our advanced Vibration Sensor (1 Pack), designed to seamlessly integrate with the OSI Smart Alarm System Gen 2. For homeowners seeking advanced security measures, vibration sensors detect the slightest vibrations around the home, such as those caused by tampering with stationary windows or doors. This sensor offers early detection before an intruder can gain entry. We advise using the our Contact Sensors for windows that do open and these Vibration Sensors forstationary windows with do not open.