to install, this glass break requires no wiring, making it a solution for enhancing your security. Simply attach it to your or doors, and it will immediately start monitoring for any vibrations or breakages. Its compact size ensures it remains unobtrusive while providing maximum protection. Features -Color:Multi -Material:ABS -Size: 6.40X5.10X0.85cm/2.52X2.00X0.33in -Sleek and slim: the sleek and slim design of this vibration alarm makes it an unobtrusive addition to your security setup, fitting neatly on any window or door -Immediate alert: instantly triggers a loud alarm when it detects vibrations or glass breakage, alerting you and scaring off -Setup: designed for installation, allowing you to quickly and efficiently -Robust and reliable: made from durable materials, this alarm is built to withstand regular use and provide dependable security -Enhanced safety: works in conjunction with other security systems to offer enhanced safety for your home, covering all points Package list: 4PCS Window Vibration Alarm