The Zoll Automated External Defibrillator is a life saving device used when someone suffers from cardiac arrest in a public place. The Zoll AED was designed specifically for layman to use during an emergency situation while waiting for first responders to arrive. The Zoll Automated External Defibrillator walks the user through a serious of simple directions, by clearly going over each step, making it ideal for schools, churches, shopping centers, public transportation and more..