Electronics for New Machine + Chinese Spindle + VFD

[JAZZCNC]

That throws me to another question. I have ordered a NO and a NC Sensor
from china, only to make the basket full. The NC is blue and the NO is orange.
I don't know if its alwas so, or can this made from each manufacturer different.

Like Clive says forget colours that's not how they are identified. It's the last two letters that do that.
The Last Letter tells you if NPN or PNP. Second to last NO or NC.

NPN = X
PNP = Y
NO = B
NC = A
NO & NC = C (4 wires )

IE: BX = NO NPN