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Close to what I need
This is a Female Socket that provides 4 connections. A 2.5mm diameter Jack plug with 4 Poles (3 isolation rings) does fit in this socket, However, only 3 Poles of the Jack plug make contact: the Pole furthest from the tip does not connect to the gold plated pin as I had expected.
This review has been posted for Female 4 Poles Jack 2.5mm Socket Gold Plated This is a Female Socket that provides 4 connections. A 2.5mm diameter Jack plug with 4 Poles (3 isolation rings) does fit in this socket, However, only 3 Poles of the Jack plug make contact: the Pole furthest from the tip does not connect to the gold plated pin as I had expected.
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