I'm looking for the power adapter for a dehumidifier (Zibro Clima D4) described in the specs as a CE approved 220-240 V, AC/DC 13 V/5 A power adapter, which is shown in the manual and partially shown in this picture.
However, I don't know if the two-pin socket is standard. It looks a little like a polarized IEC C7 connector, but it's square on both pin sides, measuring 14 mm x 8 mm, without the top edge lip, like this:
Which search terms do I need to use to find this online?