These pads are for the Philips HeartStart FRx AED.  They are packaged inside a gray case with the cord accessible to plug into the AED.  This pad case fits into the FRx AED carrying case.  The pads are a one time use item with a life of approximate 2 years.  The pads expiration date is posted on the pad case.  After the expiration date, the manufacture recommends replacing the pads. 

These pads are cross compatible with other Philips devices and can be used with the Philips FR2, FR2+, FR3 and MRx devices.  Philips recommends purchasing the specific pads appropriate for your device.

If you need to use the AED on an infant/child, the FRx AED coverts the adult pads for use with an infant or child, with the purchase of an FRx infant/child key.

The Philips HeartStart FRx Debrillator is designed to be easy to set up and use, as well as rugged and reliable for those who get there first. On the scene with law enforcement, on the field with student athletes, or on the job with employees, the FRx Debrillator treats sudden cardiac arrest (SCA) in environments and conditions too demanding for other defibrillators. 

The FRx AED Pad warranty extends to the expiration date of the pads.

To replace your FRx AED pads, simply open your carry case, remove the AED pads plug from the device, and insert the new pads.