StreetWise 72-0028-2 Wireless Installation 105 dB Mini Window Alarm, 2-Pack Features Include: Powerful alarm will scare away intruders Can be used to secure just about anything Great for windows, doors and cabinets Disarm key allows you to open protected object without activating the alarm Easy installation -wireless Batteries included includes warning lableUnit measures 5 x 2 x 3-Inch