For Your Safety: Ideal window alarm for your safety to deter intruder thief entry and alert residence. Also perfect glassbreak warning for your house, office, apartment, garage, dorm, RV, hotel and so on.
125DB Loud Window Alarm: When NOOPEL glass break alarms detect vibration or shock waves associated with glass shattering, they sound an 125db alarm continuously 30 seconds.
Easy Installation: By simple peel and stick as includes double sided tape! No wiring needed! No screws needed!
Ultra Slim and Low Battery Indicator: Includes FIVE glass break alarms, each dimension Size: 2.9" x 2.9" x 0.4”, each with 2 adjustable settings ON/OFF, each with 3 X LR44 Batteries included. Built-in low battery indicator to check battery life easily.