The GE MAC 3500 is a reliable and user-friendly electrocardiogram (ECG) system, designed for hospitals, clinics, and physician offices. It offers 12-lead resting ECG analysis, which is crucial for comprehensive cardiac assessments. One of its standout features is the Marquette 12SL ECG Analysis Program, which includes gender-specific interpretations, making it easier to detect conditions like acute myocardial infarctions (AMIs), especially in women.

The device has a 6.5-inch color display that shows 12 leads at once, and the Marquette Hook-up Advisor program ensures high signal quality by helping reduce poor waveform capture. To minimize data entry errors, the MAC 3500 comes with a barcode and magnetic card reader for easy patient identification. Additionally, it stores up to 50 ECGs in internal memory, and optional external storage can expand this capacity using secure digital (SD) cards.

The system is highly flexible, supporting both battery and AC power, with a battery life of around 6 hours for continuous use or 100 single-page reports per charge​