The HeartStart FRx AED is great for athletic usage. The clear voice commands and descriptive visual icons make it easy to use in any emergency situation. The FRx defibrillator guides rescuers through each step with clear voice commands and descriptive visual icons. The blue i-button activates HeartStart CPR Coaching for CPR assistance and flashing icons can be used for defibrillation even in loud disruptive situations. To treat a child or infant, simply insert the infant/child key and the device adjusts pad placement and CPR instructions (sold separately). Compatible with professional-grade AEDs to ensure continuity of care. Unit is AHA compliant. When purchasing the FRx, School Nurse Supply, INC., needs a medical authorization form sent in with the order. This is the doctor’s information which states they know the facility has an AED. Medical authorization is required for this unit.