The HeartSave Y and HeartSave YA by PRIMEDIC are ideal AEDs for first responders and lay users. Both devices provide clear voice instructions and use a metronome to guide CPR. They autonomously decide if a shock is necessary, ensuring no accidental shocks. The HeartSave YA delivers shocks automatically, making it perfect for public areas where laypersons often provide first aid, ensuring safe and reliable defibrillation.