Enough to Use: You will receive 20 packs of LED emergency strobe lights, featuring a waterproof design and made of quality aluminum alloy housing with excellent heat dissipation. The high-transmission PC lens provides reliable protection, is resistant to breakage and deformation, and performs well in harsh environments. Easy to Install: These LED warning lights offer two lighting modes—constant and strobe. The red wire connects to the positive pole, the black wire to the negative pole, and the yellow wire enables mode switching. Touching the yellow wire to the red wire changes the flashing mode; releasing it locks the selected mode. High Bright LED Light: Equipped with 6 high-intensity LED chips, these strobe lights deliver superior brightness and visibility, significantly brighter than standard LED lights, enhancing safety during both day and night driving. 2 Flashing Patterns: These LED strobe lights provide two distinct flashing patterns: constant and directional flash. Designed for low power consumption, fast startup, and efficient heat dissipation, they add a stylish, eye-catching look to your vehicle. Various Applications: Compatible with 12-24V vehicles, including trucks, SUVs, pickups, off-road vehicles, ATVs, construction equipment, emergency vehicles, fire trucks, and other commercial or industrial vehicles.