HeartStart FR2 Defibrillation Electrode Pads are general purpose pads for use with HeartStart FR2 and FR2+ AEDs. These electrode pads are recommended for use on patients over the age of 8 or above 25 kg. in body weight. For children under 8 years of age or less than 25 kg., we suggest using the Philips HeartStart FR2 Infant/Child Reduced Energy Defibrillator Pads.