The Cardiac Science Adult Intellisense® Defibrillation pads are stored preconnected to the AED – a technology first developed by Cardiac Science to expedite the rescue process. These pads can be placed in either position on the chest to reduce confusion and save time during a rescue. Using patented Rescue Ready® technology and embedded circuitry, Intellisense defibrillation pads communicate presence, functionality, patient type, energy and CPR protocol, pad expiration, and other vital information directly to your Powerheart G5 AED.Read Less-