The Zoll AED Plus Series Defibrillator offers clear voice prompts, visuals, and text to guide lay rescuers through the entire resuscitation process. This AED also features an LCD screen display and is configured with Real CPR Help and See-Thru CPR technology that allows the rescuer to see depth and rate of compression as well as monitor underlying ECG rhythm while performing CPR. The included CPR-D-padz contain a pair of electrodes that sense and report the motion of victim chest compressions to the AED Plus. Additionally, the AED Plus responds to the rescuer's compressions and guides the rescuer through CPR with Real CPR Help. Furthermore, the AED Plus is capable of letting the rescuer know when to begin CPR, and allows the rescuer to receive real-time depth and rate CPR feedback. With a walk-through of where you place your hands for proper chest compressions and where you place the pads on the patient, the Zoll AED Plus Series Defibrillator helps make it easy for first time AED users.