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Cardionet, LLC
PO BOX 508
Malvern, PA 19355

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Call to make payment: 877-837-6027 M-Th 8AM-6PM, Fri 8AM-5PM, Sat 9AM-2PM Eastern Standard Time.

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Please make checks payable and remit to:

Lifewatch, INC
2731 Paysphere Cir
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Call to make payment: 1-800-336-3866 9AM-7PM Mon-Fri Central Time

ER 920W
Event Monitoring

Next Generation Cardiac Event Monitor

The ER920W is an advanced wireless device that integrates cardiac arrhythmia monitoring and cell phone technologies in one unit. The ER920W is a digital loop recorder that enhances diagnostic yield with onboard arrhythmia detection algorithms for automatic detection, recording and automatic transmission of patient data files to a service center for immediate analysis and physician attention.

Take a look at our instructional materials to get set up quickly.

Key Benefits

  • Diagnostic embedded algorithms that automatically capture asymptomatic events
    Atrial Fibrillation
    Cardiac Pause
  • Single device for patient convenience, comfort and ease of use. Patient does not need to carry a separate cell phone and be concerned about power to both the device and cell phone.
  • Powered by 1 AA Lithium Thionyl Battery Pack. No battery charger is required to power the cell phone.
  • No patient interaction to transmit data. Simple, easy to use improving patient compliance.
  • Transmission of data can be sent wirelessly or also transtelephonically as a backup if the patient is out of cellular network.
  • Allows for bidirectional data flow, so the physician can monitor the patient’s cardiac events and remotely program the device as required.
  • Cellular transmitter embedded in the ER920W uses a “Quad-Band” modem for maximum flexibility and is compatible with both GSM and GPRS cellular networks.

Popular Topics

Get quick answers to some of our most common questions.

Why do I have to wear a heart monitor? 

Is it okay to wear the monitor while exercising? 

Can I travel with the monitor? 

Should I wear the monitor at all times? 

Will the monitor alert me if my heart is in an irregular rhythm? 

Will you contact me if I have an arrhythmia? 

How much will this cost me, and when will I get billed? 

If I send the monitor back before my service is over will my bill be reduced? 

Where can I go to pay my bill? 

How can I get copies of my reports sent to me or another physician? 

Why am I getting a call to return my device when I already sent it back? 

I forgot to include something in my return, what should I do?  

Technical Specifications






Transtelephonic Transmission 

Wireless Transmission 



Contact BioTel Heart

Patient Support

888.312.BEAT (2328)
Chat with a Representative