AED Plus® Defibrillator with Professional Cover. When it comes to helping a victim of sudden cardiac arrest, not all AEDs are created equal. Unlike other AEDs, ZOLL® AEDs support res-cures with integrated, real time feedback on compression rate and depth. Recommended by medical professionals, the ZOLL AED Plus® defibrillator with Real CPR Help® technology guides res-cures in performing high-quality CPR and provides integrated audio and visual feedback to support you throughout the res-cue.