Corona Information

Cortrium is still operating during the Corona crises.

All orders are shipped within 2-3 working days, so you can continue sending us your purchase orders. The automated Holter Monitor reports are delivered without delay. If you have any questions please contact our Customer Support via e-mail or phone.

Customer Support

We are here to help you!

Our support opening hours:
Monday – Thursday 09:00 – 17:00h
Friday 09:00 – 15:00h

To assist you with your questions Cortrium uses Teamviewer. You can download the latest version here.

Andreas Freiler

Customer Support

Dr. Susan Beckmann

Customer Support & Sales Support Advisor

Getting Started

The C3⁺ Short Manual will get you ready for your first recordings. In this guide, you will learn about the basic usage of the C3⁺ Holter Monitor and about the status coloring.

As a patient, please watch the video and follow the steps displayed in the pictures to start a recording.

As a physician, please download and install the Data Transfer Tool (DTT) before starting a recording. Charge the C3⁺ (via PC or via USB charging cable using a power outlet) for at least 1 hour. Carry out the C3⁺ setup via the DTT and prepare the C3⁺ for use on a new patient.

C3⁺ Short Manual


Here you can download relevant files and documents for your C3⁺ Holter Monitor.


It is important to keep a diary of activities and symptoms, while wearing the C3⁺ Holter Monitor.


Data Transfer Tool

To access the data stored on the device, doctors need to use our Data Transfer Tool. Current version is 20.01.08.


Technical Documentation

This are the official instructions for use and technical documentation of the C3⁺ Holter Monitor.


Frequently Asked Questions (FAQ)

We have collected a number of common questions and answers in our FAQ section.

Frequently Asked Questions