CU692 pertains to the model number that you currently hold in your hands.
The note refers to the fact that the connector provided with the lamp will only function with the luminaire it has been packaged with.
Basically the kit you have is a CU692. If you ever wish to change your luminaire you would have to change the connector as well.
Other than that, you should be all set to use the kit without a problem.
Should you have any other questions please feel free to contact us by phone at 1-877-333-0098 or by email at email@example.com
-Customer Service Team