The LIFEPAK 250 AED was designed to treat cardiac victims and ECG monitoring. The unit advises the operators whether or not defibrillation is necessary and will defibrillate upon command through FAST-PATCH electrodes and cable. Operates on one battery and can be combined with LIFEPAK 5 monitor for ECG monitoring. Unit comes complete with defibrillation cable, monitor, 2 batteries, manual and 6 months parts and labor.