Alarm System

This is a cool way to make a PA system

Step 1: Speakers

If you have old computer speakers that you don't use and make sure they work

Step 2: Tape Recorder or IPod

Get a siren App if your using a iPod if your using a tape recorder record a siren sound

Step 3: Connecting the Sound

Plug the speakers in and plug the iPod or tape recorder in. I really hope this helped you