The pads are "SMART" because they work with the device to sense whether they have been removed from the cartridge and placed on the person's skin. Pictures on the pads illustrate correct placement.

Defibrillation pads should be replaced after each use, or every two years if they have not been used.

HeartStart Adult SMART Pads are appropriate for cardiac arrest victims weighing 25kg. (55lbs.) or more