This document provides information about the Heartrak wireless cardiac monitoring system. It describes how the system works, including how patients receive the monitoring equipment and how it is set up. The Heartrak monitor continuously records cardiac data and sends it wirelessly to a communicator, which then transmits the data to a 24-hour monitoring center for analysis by physicians. The document outlines the different types of communicators and monitors that are part of the Heartrak system and provides step-by-step instructions for technicians to follow when setting up the equipment with patients over the phone.