Why is Handset beeping?

The handset is beeping at regular intervals. Would it mean battery needs replacing?

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@smkimmins, Hi how the phone was used? batteries have lifespan.... maybe ard two years if it is always on.

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Just put brand new batteries in old Unidem phone and faint beeping still there but goes better than before

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Roachy, check your power adapter with multimeter too.... ensure they are supplying correct voltages.

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