XBB Lightswitch works by passively reading the signal from the vehicle's high beam. The patented technology, together with the software, can detect high beam signals from various sources including Halogen, Bi-Xenon, and LED lights. Of course, XBB Lightswitch can also control LED light bars, reverse lights, work lights, xenon, halogen, and LED auxiliary lights. XBB Lightswitch works on both 12V and 24V systems. Voltage and current monitoring on each individual output as well as the vehicle's battery voltage are continuously monitored. Install your additional lights in an instant. No interference with the vehicle's original wiring. Does not disturb the vehicle's electrical system. Connect up to three additional lights (or connect two additional lights and DRL function). Short-circuit protected. Voltage monitoring.