When aged individuals have to stay home by themselves and a medical emergency arises, there has to be some way in which they can call for help – this is the facility medical alert systems provide. A medical alarm system works in a very simple way – user pushes button in an emergency from a transmitter which can be worn on the person; a two-way communication is established through a base station with a call center; the operator at the call center sends medical help according to the situation.
 
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