In this step-by-step tutorial, you'll learn how to make a very loud, simple, and powerful alarm using everyday materials.

If you're looking for some extra security in your home or while traveling, consider buying the unbelievably loud door stop alarm.

Dana said the need for a church bell and ringer to warn of fire ended when the first electric pull-box alarm system was installed in Sanford in 1894.

Your cell phone will play a sudden, loud alarm at 2:20 p.m. Wednesday as part of the Federal Emergency Management Agency’s national test of its alert system through all consumer cell phones ...