M Series and M Series CCT Thank you for your interest in the ZOLL M Series® Monitor/Defibrillator and M Series CCT. The M Series and the M Series CCT are currently available in certain countries. Download product manuals for these devices. ZOLL also offers the R Series® Monitor/Defibrillator for the hospital market and the Propaq MD® for military customers. Designed with easy-to-use technologies, both help you consistently deliver high-quality CPR. The CPR Dashboard™ provides a real-time display of CPR quality metrics using Real CPR Help® technology, while See-Thru CPR® minimizes pause time during CPR by filtering out CPR artifact.