CardioNet Holter Monitoring CardioNet provides versatile digital Holters, supplies, and a proprietary WebHolter data transfer system as part of its turn-key Holter monitoring service. The digital Holter monitor is lightweight and user-friendly. It provides state of the art digital recordings that are easily interpreted by physicians. The patient event button has multiple symptoms and activities that can be selected by the patient for a more detailed report. Once monitoring is complete, ECG data stored on a flashcard can be uploaded to the CardioNet Holter Department via the Internet where technician interpretation is noted and reported. There is immediate access to reports with the ability to print reports locally as needed.