Zoll CPR Uni-Padz III Universal Adult/Pediatric Electrodes (#8900-000280-01) are compatible with both the Zoll AED 3 and the Zoll AED 3 BLS devices. These universal pads can be used in an adult or child rescue. For child rescue, simply reposition the CPR Uni-Padz as shown and activate child rescue mode. They also provide full CPR feedback for adult patients.