HeartStart OnSite can be used on patients of any age. Special Infant/Child SMART Pads reduce the defibrillator’s shock energy, so that you can treat an infant or child suffering sudden cardiac arrest. The Infant/Child Pads cartridge is marked with an indication of the appropriate weight and with a teddy bear icon for ready identification. These pads instruct the AED to reduce the shock from 150 to 50 Joules. These pads are to be used for patients 8 years of age or under, or if the child weighs less than 55 pounds. This includes infants. These are a must for churches, schools, daycare and other locations where children are located.