The Physio Control Lifepak CR2 AED is a complete and connected AED response system expertly designed for user confidence. The CR2 is easy to use and the only AED that allows CPR compressions during heart rhythm analysis. And LIFELINKcentral™ AED Program Manager monitors each AED every single day, sending alerts via cellular network or Wi-Fi® about anything that may affect a unit’s readiness—all automatically.