This sophisticated module provides significant training and practice opportunities in three, electrodes leads (LV, RV and RA) placement. The simulation, designed to help develop competence in electrophysiology interventions, includes real life sensing and pacing measurements and enables clinicians to cope with procedural arrhythmia complications, such as A.V block, VF and VT. The CRT module provides a variety of realistic anatomies based on real patient data including variations in the CS ostium (e.g. Thebesian valve) and coronary sinus vasculature.