Critical Signal Technologies, Inc. (CST) was founded in 2006 by Jeffery S. Prough (President/CEO) as a provider of 24-hour personal emergency response monitoring and related services to elderly, chronically ill or disabled individuals. Over the following 3 years, CST grew to over 15,000 subscribers and emerged as an industry innovator by integrating medication management, telehealth, managed care and multi-resident solutions in its philosophy of customized solutions and monitoring. In 2009, CST acquired the stock and assets of GTL, Inc. dba "Link to Life", a 30 year old PERS monitoring provider in Massachusetts. Today, CST is considered one of the fastest growing companies in the industry and is now the fourth largest, independent multi-channel PERS supplier in North America, with 80,000+ physical subscribers and over 300,000+ lifetime subscribers. We are considered to have the industry's most flexible and scalable monitoring platform in the Nation and are supported by two fully redundant, multi-lingual, 24/7 Care Centers located in Michigan.

Medical Monitoring Personal Emergency Response Systems (PERS) Medication Management Systems Transitional Care Solutions Senior Housing Pull Cord Systems Chronic Disease Management Telehealth Social Work Wellness Coaching Care Coordination 24/7 Monitoring Medicaid Managed Care Independent Senior Living Medical Alert Systems Medicare Advantage Post-Acute Care Hospital/Clinic Specialty Hospitals Except Psychiatric Health Care Services Hospitals Health Care