Philips FRx SMART Pads IIThese AED pads can be used on adults, children and infants, eliminating the expense and confusion of having different pads sets for different patients. For patients less than 8 years old or 55 lbs (25 kg), use the infant child key, if available. These pads come pre connected and packaged in a semi rigid case for extra protection. These pads are designed for use with the Philip HeartStar FRx AEDs. These pads must be replaced after 2 years or