This unique Infant/Child Key is used only with the FRx defibrillator when treating an infant or child who is under 55 lbs or 8 years of age. Once the Infant/Child Key is inserted, the FRx automatically reduces the defibrillation energy and provides voice and visual instructions and CPR coaching specifically geared for treatment of infants/children. Graphics on the key show proper pad placement for infants and children.