How Do Medical Alert Systems Work?

One of the questions we get all the time is: How do your medical alert systems work?


Let’s first begin by explaining the individual parts. Generally, there are four components to a medical alert system (PERS). The first component is a radio transmitter, or the call button. The call button may be worn on the wrist like a wrist watch or it can be worn as a necklace (pendant). The second component is the console or base unit. The base unit communicates with the call button through radio waves. The third component is your standard phone line or Voice over IP line (VoIP). The last part of the medical alert system is the response center or monitoring center.


How It Works


Once the call button is pushed on the wrist band or necklace, the base unit makes an outbound phone call to a preset number. The console will disable and interrupt any current phone calls as well as act as a two way speaker phone. Some medical alert systems have the speaker built in to the call button and some use the base station. Both have their advantages and disadvantages. The console is very sensitive to voices and will pick up a voice or sounds from most any room in the house. If there is no response, the call center will dial 911 and send out emergency personnel immediately. At MedFirst alert, we even call family members and neighbors if instructed to do so. This can be very helpful to a senior in need of immediate comforting and medical treatment. The range of the call button is approximately 200 to 600 feet outside of the house, depending on the medical alert system. This means that if an accident were to occur outside, help is still available.



The most important part of any medical alert system is the company standing behind the service and monitoring of these systems. At MedFirst Alert, we treat each person using our system as if they were part of our own family. We have a full time staff of care specialist which are highly trained answering the phones 24 hours a day. You can be assured that your loved one will be taken care of. Please give us a call at 1-800-595-0718 for more information or order a free brochure from

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