What crucial limitation existed in early Lifeline systems regarding the user and the base station?

Answer

The user had to be within range of the base station to converse with the operator

As Personal Emergency Response Systems evolved past the initial manual alert necklaces connected only to predefined phone numbers, they integrated speaker systems connected to a base station, often linking the user to a live operator. However, a key limitation present in these systems during the late 1970s and 1980s was geographical constraint imposed by the base station's signal range. For the user to successfully converse with the responding live operator after initiating the alert, they needed to remain physically within the proximity of that stationary base unit inside the home.

What crucial limitation existed in early Lifeline systems regarding the user and the base station?
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