Window Alarms 4 Pack, 130dB Loud Glass Break Sensor & Vibration Alarm for Home Security, Burglar Entry Detector for Office, Apartment & RV

130DB Loud Window Alarm: AINOORA glass break alarms will sound a 130db alarm continuously for 30 seconds and red indicator will also blink after detect vibration or shock waves associated with glass shattering.
Ultra Slim Design: Includes FOUR glass break sensors, each dimension Size: 2.6″ x 2.1″ x 0.3”, each with 2 adjustable settings ON/OFF, each with 3 X LR44 Batteries included with 1 year stand-by time.
Working Indicator and Low Battery Warning: The indicator light will flash for 5 seconds after turn on the alarm. Also it is built-in low battery indicator to check battery life easily.
Easy Installation: By simple peel and stick the alarm on any window or glass as includes double sided tape! No wiring needed! No screws needed!
For Your Safety: Ideal window alarms for your safety to deter intruder thief entry and alert of a potential break-in and scare away burglars. Also perfect glassbreak warning for your house, office, apartment, garage, dorm, RV, hotel and so on.