4 Packs Ultra-thin Window Security Alarm, built-in sensor detects vibration and emits a 120 dB alarm to alert you of a potential break-in and scare away burglars.
Unique high/low sensor sensitivity setting, to helps prevent false alarms.
Red warning LED light blinks every 4 seconds, to caution would-be intruder of the window’s protection. Comes with warning sticker, stick on windows to scare away burglars.
Low battery warning, remind that you need to replace the battery, will not miss the safety protection at home. Requires AAA*2pcs batteries (not included), AAA batteries give these alarms great battery life, you don't have to change often.
No wiring needed, simply peel and stick the alarm on any window or glass. Perfect for any window (including sliding windows) in your home, garage, office, RV, dorm room.