This LED light bar is special for RC car models, it has Strobing-blasting Flashing fast-slow Flashing alternately Mode and so on. Feature: 5 flashing mode. RC CH3 Controling Flashing Mode. Using receiver as power supply. Suitable for 1/10 1/8 RC Model Car Specifications: Voltage: 4.8~6V Size: 102*25*10mm/ 4.1* 0.98 * 0.39in Instructions: the power line is connected to the receiver third channel(CH3) Color: Red Blue Yellow Red&Blue Package List: 1 * RC Car LED Police Light Bar