The Lifepak® CR2 electrode pads are designed for both adult and paediatric use. Compatible with any Lifepak® CR2 defibrillator (including semi-automatic and fully automatic devices), the Lifepak® CR2 electrode replacement should be used once the original electrodes have expired or if requested via maintenance command. To ensure your semi-automatic or fully automatic Lifepak® CR2 defibrillator is ready for immediate use, it's recommended to change the electrode pack every four years. The electrode pads are easy to change and replace in your current Lifepak® CR2 defibrillator. The Lifepak® CR2 defibrillators we distribute and stock are considered the fastest defibrillators, offering speedy patient analysis of heart rhythms. Both semi-automatic and fully automatic devices afford first responders excellent support thanks to a range of features such as CPR coaching and metronome sounds to assist with chest compressions.