The Cardiosim II model generates 11 Arrhythmia Waveforms in addition to options available in CardiosimI. These Arrhythmia waveforms include 1. AFIB (Atrial fibrillation) 2. AV2BLK1 (second degree block type 1) 3. RBBB (Right bundle branch block) 4. PAC (Premature atrial contraction) 5. PVC(Premature ventricular contraction) 6. PVC R ON T (PVC R wave on T wave) 7. MFPVC (Multi focal PVC) 8. BIGEMINY (Normal beats repeated) 9. RUN 5 PVC (5PVCs+36 normal beats, Reapeated) 10. VTACH (Ventricular tachycardia) 11. VFIB (Ventricular fibrillation) models are capable of operating in mains & battery. The Cardiosim series is powered by 16-bit High Performance Microcontroller