The Philips FRx Infant/Child Key converts the FRx into a pediatric defibrillator. You can use the same SMART Pads II for infants, adults, and children with this product which eliminates the need to order and keep track of multiple types of electrode pads for various age groups. It is intended for use on children up to 8 years of age and less than 55 lbs.
The key can be used over and over again with no need to replace it. Compare that to the cost of replacing pediatric electrode pads on other AEDs and you’ll experience the savings.