The GE Mac 1200 ECG EKG Machine is a 12 channel, 12 lead EKG, ECG machine sold used refurbished and patient ready. Used Hospital Medical Equipment New, used and refurbished surplus medical equipment including hospital beds, stretchers, surgical equipment, patient monitors and everything in a hospital. MAC 1200 Resting ECG Analysis System Option Codes In addition to the software supplied with the unit, optional programs may be purchased to upgrade the MAC 1200 performance features. In order to use a new option, you need to activate it by entering the option code number (refer to Chapter 9, “Option Code” section for details). The option codes are entered into the MAC 1200 prior to shipping.