These Philips Infant/Child Reduced Energy Defibrillator Electrode Pads are for use with Philips HeartStart FR2+ AEDs (models M3860A and M3861A) or Laerdal HeartStart FR2 series AEDs (models M3840A and M3841A). These are fully functioning AED electrode pads for use on children up to 8 years of age or up to 55 lbs. (25 kg.) in body weight. When used, these electrode pads reduce the energy level administered to the patient from the adult dose of 150 joules to a child dose of 50 joules. They are single-use and disposable. These electrode pads are NOT for use with the Philips ForeRunner (FR or FR1) AEDs.