The HeartSine samaritan PAD 360P is a fully automatic external defibrillator (AED) that analyzes the heart rhythm and delivers an electrical shock to victims of Sudden Cardiac Arrest in order to restore the heart to normal rhythm. This user-friendly AED provides easy to follow visual and audio prompts to guide the rescuer through pad application. Shock delivery, if required, is fully automatic which means there is no shock button to press.