QRS provides advanced Holter and Event technology. Our hardware is compact, light and easy to use providing patient comfort and peace of mind when the device is in use. Our accompanying software, Holter LX Analysis, is accurate, efficient and effective, thoroughly capturing and analyzing patient data.


The Q200/HE is the industry’s first combination 14-day Holter plus 30-day Event monitor. The Q200/HE interfaces with Holter LX Analysis to capture elusive cardiac events, deliver fast and accurate analysis and provide customizable reports.


The Q200/HE digital recorder can be used as either a Holter monitor or looping Event recorder and is designed to facilitate ambulatory cardiac monitoring. Monitoring patients with the Q200/HE assists in diagnosing, treating and observing those complaining of palpitations, syncope, chest pains, shortness of breath or those who need to be monitored to judge their current cardiac functions or reactions to treatment.

Data obtained with the Q200/HE digital recorder is analyzed by the Holter LX Analysis Software. LX Analysis allows for full review of all the ECG data recorded during the Holter test, including all normal, ventricular, supraventricular, paced beats and more.

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