Amazon.com.au:Customer reviews: EVA LOGIK Modern Ultra-Thin Window Alarm 8 Pack with Loud 120dB Alarm and Vibration Sensors Compatible with Virtually Any Window, Glass Break Alarm Perfect for Home, Office, Dorm Room
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This thing will burst your eardrum! Louder than any alarm I have yet to experience. Didn’t see the stick on backs but we did fine enough. These are the size of my palm. Loudest thing ever! Wear ear plugs for install!! Lol