space; easy to carry while travelling. Convenient for detecting door and window openings. Our alarm siren not only shocks the intruder, but also wakes you up while you sleep. Also very suitable for preventing your children from opening doors and windows they shouldn't! It can even be used to prevent terrible accidents for sleepwalkers. 130dB High Decibel Door and Window Alarm: This alarm features a vibration sensor, which is the perfect choice to detect broken glass and when doors or windows are forced open. Vibrating alarm. Loud enough to alert occupants of apartments and buildings when an intrusion occurs, enough to warn neighbors, powerfully deter thieves and stop intruders in time. Let's feel safe. Simple installation: the sensor is suitable for all windows. Easy to install. The back of the alarm comes with strong adhesive. Use a small amount of rubbing alcohol to clean the area that can accommodate the alarm to ensure adhesion. Just tear off the sticker to install and stick the back on the window or door. Does not destroy the original decoration of doors and windows. Small in size and does not take up space. Minimalist and simple operation: unique ultra-thin design door and window alarm. There is a switch that can be turned on or off. We turn the switch to ;on; if necessary, the LED will flash for 5 seconds. When the sensor detects vibration, the alarm activates and sounds a 130dB alarm to alert you to potential break-ins and scare off intruders. You can use one or more options to stick self-adhesive windows or doors. Wide applications: suitable for your home, office, garage, dorm, store, warehouse, shed, hotel security, etc. Used for glass doors and windows, drawers, cabinets, safes, home security doors, etc. Also used for garage door, garage, RV, RV, car, children's window. Security is one of the best gifts. Buy one for every door and window, and show your loved ones your concern. Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and weather. display, there will be a certain color difference, the actual object received shall prevail.