Two sets of Red Micro LEDs flash in alternate pattern. Perfect for school bus lights, crossing guard.Continuous action on long as power is supplied. Uses NANO (0603) LEDs Crossing Guard/ School BusSKU: FXB-CG-RED$16.95PriceQuantity*Add to CartTech Specs6 - 12v DC or AC Power supply needed. Four (4) Bright RED NANO (0603) LEDs 8" wire attached No resistors Needed for LED