High performance Ultra-thin waterproof design, high quality aluminum alloy housing + PC lens, anti-collision, dust-proof, splash-proof / non-polluting, no noise, no interference electronics Better dissipationthermal insulation and unlimited installation possibilities. Excellent Visual EffectSuper bright LEDs, lifespan up to 50000 hours, wide visibility angle and high intensity strobe. Low power consumption, fast instant start-up time. Wide ApplicationsUniversal for 12-24V all cars, off-road vehicles, ATVs, trucks, engineering vehicles (excavator, treedozer, road roller, bulldozer, crane and mining truck, etc.). For special vehicles (fire brigade, carspolice, rescue vehicles, communication vehicles, military command vehicles), forklifts, trains, ships, boats, buses and tanks. Easy 3-Wire InstallationThere are two lighting modes: constant mode and strobe mode. The red cable connects to the positive. The black cable connects the negative. Connection of the yellow cable negative change in flashing mode. (Whenthe yellow line touches the red line, the mode changes. When the yellow line is released, the mode is fixed.) SaferHigh flashing intensity keeps your driving safe and traffic accident free. Please buy with confidence. If you have any questions, please do not hesitate to contact us.