ppc_michael said:
Thanks, but I'm talking about the sensor that decides when to automatically turn it on.
No, since that would make things too complicated. Apple keeps things uncoomplicated, thus the single button mouse. Less to them is better, even though this type of setting would be nice. You can have it not so bright, bright, or off completely. Sorry. If you want to have them off by default, under System Preferences, Keyboard & Mouse, there is a "Illuminate keyboard in low light conditions" check box you can uncheck.
There maybe third party apps that can configure this, but I don't know of any. versiontracker.com is where you will find it.