Optronics SLL43AB2P is for the SLL43 Series. This Amber 4" Oval Sealed LED Warning Lamp. this light is sonically sealed and waterproof. Flashing lights with triple flash function meets SAE J595 and J845 standards for class 2 and class 3 directional warning lamps. Use two function 2 lights for synchronous flashing. Operating voltage 9-30VDC suitable for 12V or 24V systems.