Finally, no more surprises

Easy to use:
Preheat monitor (ie, at least 30 minutes in operation)
You start the software, the device attached to the marked position in front of the monitor, then lets go through the program.

After the profile is created and loaded, it shows on your monitor manufacturer with a more or less dramatic leap in terms of color temperature.
In my Eizo FS2333 the jump is very low, ie the unit is already set very well at the factory. In the next to it (and older) Samsung monitor that's quite a rough difference.

What is important: do not get irritated, what the changed color temperature hits. One is so used to the pretended picture that you so do not like the new setting only. The places in the long run.

Another note:
Are multiple monitors in the house (children, (marriage) partner ....), you can adjust all with one software + hardware.
I got myself from Datacolor the OK several times to install the software. If the manufacturer is no problem (CD Key is not locked).