Mini Magnetic Contact Alarm and Chime (4 Pack)
At only 2 1/2 inches long, these economical alarms inconspicuously protect your home from intruders. They use magnetic sensors to detect the opening of a door, window, cabinet, etc. A 90dB alarm or a chime will then alert you to an attempted entry and scare off potential intruders. The owner may open the protected window or door without setting off the alarm by switching the on/off switch to the off position. These alarms can also be used within the home to alert parents when children open a gun safe or medicine cabinet. Commercial uses include showcases and cash registers. Please note that this item is sold in packs of 4. Therefore if someone orders 2, they are getting 2 (4 packs) NOT 2 units. Batteries are included. Covered under a 90 day warranty.