The footswitch for PTT that you need is coming

Ailunce FS01 is a single channel foot switch to control the transmit/receive function of an amateur radio transceiver. It has a big and non-slip footswitch, 2m shielded cable and 3.5mm to 6.35mm(1/4 Inch) adapter cable.

We can use the 3.5mm plug to work with Ailunce SM01.

If you don't want to use the desktop microphone, the 3.5mm to 6.35mm(1/4 Inch) adapter cable works with other HF transceivers with Heil CC-1 and AD-1 cable systems.