This compact, easy to install, magnetic contact alarm made by Intermatic (a recognized leader in the security industry) can be used on doors, windows, cabinets- anything that opens and closes. It is an ideal security device for home, store, office, etc. If the protected door or window is opened, it will sound a powerful 110dB alarm to scare off the intruder and alert you to the attempted entry. It features a programmable security code, 30 second exit delay, 10 second entry delay, and low battery indicator. Dimensions: 5 and 3/8 by 2 and 3/4 by 1 1/4 inches. Requires 4 AA batteries which are not included. Covered under a 90 day warranty. Also includes a window sticker to deter theft. The price of this item has been drastically reduced due to the fact that there are limited quantities available. Once our remaining stock is depleted this item will be discontinued.