These are the standard external adult electrode pads (DDP-2001) for the Defibtech Lifeline VIEW/ECG/PRO AED devices. These are replacement pads for after the original pads are used or expire. These electrode pads are recommended for use on patients over the age of 8, or more than 55 lbs. (25 kg.) in body weight. For children under 8 years of age or less than 55 lbs., we suggest using the Defibtech Lifeline VIEW/ECG/PRO Energy Reducing Pediatric Electrodes (DDP-2002). We recommend keeping an extra set on hand at all times as well as pediatric electrode pads in the event of an emergency.