The Radar Drive and React Drive can have their lighting modes controlled using the ANT+ Lighting protocol (ANT+ LGT). This allows for an ANT+ Lighting enabled device to change the mode, and power the lights on and off.
See your GPS cycling computer's manual for how to pair and control lights over ANT+. The Radar Drive and React Drive are always discoverable for ANT+ pairing.
Radar Drive and React Drive may not be compatible with any AUTO-Mode settings or special programs for ANT+ Lighting available on 3rd party devices.