wsdcam glass break sensor alarm 125db ultra-slim wireless glass break detector window alarm vibration sensor for home window and door security - 4 pack wsdcam <b>the anti-theft alarm triggered by vibration, alert you by a 125db loud alarm to protect your loved ones if potential danger is near. not only can mount this alarm on glass or sliding window/door, the vibration triggered alarm also suitable for wooden doors and windows, locker, painting, or any valuables you’d like to protect. indoor use only. this home security device helps provide your home/store with extra protection.</b> <br><br><b>product features:</b> <br>✅when they detect vibration or detect shock waves associated with glass shattering, they sound an 125db alarm and red indicator blinks. <br>✅high to low adjustable sensitivity from gently touch to push or beat, allow you to set it according to your need. <br>✅low battery warning, remind that if you need to replace the batteries. package including 3pcs lr44 battery, about 1-year battery life. you don’t need to change battery often. <br>✅one minute installation, just peel and stick. select a location and mount your sensors. the vibration sensors come with adhesive pads. ensure the mounting surface is clean and dry before adhering. <br><br><b>package including:</b> <br>4* glass break sensors (with double-sided tapes) <br>12* lr44 batteries <br>user manual