LifeFone is often well reviewed in the various online review sites and offers a fairly broad range of medical alert systems. For in-home use they have all you might expect, including fall detection and the choice of cellular or landline connection to the responders.
They have an App for those who want to use a smartphone as their medical alert system.
For out-and-about use, they offer a single pendant that can connect by itself to the responders.
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