Quote Originally Posted by mturneruk View Post
Excuse me for being dumb again, what are the prox switches actually looking for - a magnet (target wise)?
I've looked and can't find any info.
Nothing dumb in not under standing. Would be dumb if you didn't understand and Didn't ask.!!

They are Inductive sensors so they sense Metal. You can get Sensors that detect Magnets Called HALL Affect sensors. Both are used to do the same job in different conditions.
Inductive are good for routers because no flying metal chips but on a Mill not so good.!