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Through my research, there is no one site that describes what it stands for. It's mostly the voltage to signal ratio on cordless phones or wireless devices, unless if you talk about the ECO mode on cars which stands for Economy mode.

Echo-mode on phones means that if the handset is close enough to the base, then it simply uses LESS voltage (saving batteries) and wne it gets far enough from the base, then it uses a signal boost mode or kicks into higher transmission voltage thus using more power which drains your battery faster.

It's actually pretty brilliant since the majority of the cordless phones are well within the range of the base and don't need to over-power the signal & creating too much noise which can affect other devices such as laptops or tablets.

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11y ago

What else can I help you with?