ZOLL R Series ALS Defibrillator with OneStep PacingThe Zoll R Series ALS Defibrillator is a code ready unit designed to give clinicians comprehensive support for resuscitation. The ALS provides visuals that can be used as guidance and feedback to rescuers with Real CPR Help, which allows rescuers to see depth and rate of compression of CPR. The R Series ALS Defibrillator has advanced capabilities for experienced users, and has parameters that may be added, as well as a self checking, code ready system