Enough to use you get 20 packs of LED emergency strobe lights, with waterproof design, made of high quality aluminum alloy housing, with heat dissipation The high transmission PC lens can offer optimal protection, is not easy to break or deform, can be used in most harsh environments Easy to install LED warning and emergency flashing light has 2 light modes, including constant mode and strobe mode, the red wire is connected to the positive pole, the black wire is connected to the negative pole, and the yellow wire is connected to the positive change flashing mode When the yellow wire touches the red wire, the mode changes, when the yellow wire is released, the mode is fied. High Brightness LED Light The bright LED strobe lights are designed with 6 pieces of highintensity LED chips, can improve overall visibility, which is much brighter than standard LED strobe lights, can ensure your driving safe during the day and night. 2 Flashing Patterns The LED strobe lights have 2 different flashing patterns, including constant mode and directional flashing pattern, designed with low power consumption, fast startup speed, fast heat dissipation, which adds an elegant look to your vehicle and makes it eyecatching. Various Applications The LED strobe lights are suitable for most vehicles with 1224V power supply, such as truck, SUV, pickup, offroad vehicle, ATV, engineering vehicle, emergency vehicle, fire engine vehicle, construction vehicle and more.