V Lead Patient Cable for 12-lead ECG for ZOLL E & M Series Defibrillators. 3.5' length. Please note: Some ZOLL M Series are configured for 3-lead only, and cannot perform 12-lead ECG. Please check the connection port on the monitor. 7-pin is 3-lead only. Alternate Part Number(s): 8000-1008-01, 8000-1008-02