The SLMINI is Nova's innovative LED warning signal in the SMT LED Series. The SLMINI contains 40 wide-angle, high intensity LEDs. Completely self-contained, the SLMINI features 8 flash patterns and a state-of-the-art random pattern selection mode. A single wire pattern selection scheme is standard for easy hookup. The SLMINI SURFACE MOUNTS directly to the truck body with only two screws and installs easily with a three-wire hookup - no external power supply is required.