The ZOLL AED Plus is a rugged, user-friendly automated external defibrillator designed to support both professional and lay rescuers. It is uniquely equipped with Real CPR Help® technology, which provides real-time feedback on the rate and depth of chest compressions, ensuring high-quality CPR is delivered—a critical factor in surviving sudden cardiac arrest. The unit features a distinctive graphical interface with text prompts and voice instructions to guide the user through the entire rescue process. Its "clamshell" design includes a lid that can be placed under the victim’s shoulders to help maintain an open airway. This specific semi-automatic model analyzes the heart rhythm and, if a shock is required, prompts the user to press a button to deliver the treatment.