SABRE Wireless Window Glass Break & Vibration Detector Alarm with Security Warning Decal - DIY EASY Installation ATTENTION-GRABBING  this Window Glass Alarm with 115 dB sounds when glass is tampered with or broken to help deter intruders (audible up to 300 feet/90M away) USER-FRIENDLY & HELPS PREVENT INTRUSIONS  red warning sign alerts potential intruder that the window or door is secured  high/low sensitivity setting helps prevent false triggering on windy day ATTRACTIVE & CONSUMER PREFERRED  superior to other home security products, this premium white alarm looks great inside your home EASY INSTALLATION  no wiring needed (requires 2xCR2032 batteries, included) EXTRA LEVEL OF SECURITY  provides battery status update with low battery test button