On Dec 1, 5:06 pm, Ian wrote:

Any ideas on any appropriate cable to use - perhaps screened in some
way - or would some form of twisted pair help in any way? Is there any
1mm2 two core twisted pair available?

Screened twisted pair. Connect the screen to earth at one end only,
this is usually at the controller. There's usually only mA of current
involved with sensors, I don't know why 1 mm2 is needed.