The system of the present invention provides a link between the caregiver and the subject being monitored which utilizes an intermediate base station and redundant signal paths between the base station and the caregiver. The caregiver wears a unit which receives signals from the base station. Signals from the base station provide information about the subject being monitored and provide signals for use in determining whether the caregiver remains within the range of the base station. The unit worn by the subject being monitored can include diagnostic circuitry for evaluating signals received from sensors to transmit an alarm signal to the base station when the subject being monitored is in need of assistance. A range monitoring system is provided which will alert the subject being monitored as well as the caregiver whenever the subject being monitored moves outside the range of the base station.
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