Amzdeal Warning Caution Van Truck Car 8-LED Emergency Vehicle Dash Car Deck Truck Warning Strobe Flash Light 3 Flashing Modes Amber for Interior Roof / Dash / Windshield with Suction Cups (Yellow)(Round) LED produces a very bright light Up to 30,000 hrs life expectancy Installation: Plug this into your 12V cigarrette lighter and with the magnetized bottom place on any exterior metal With safe voltage and double insulation, it is very safe to use and not harmful to human body in rain Weatherproof ready for exterior mounting; dust cover allows for easy maintenance. Great for emergency workers, construction, security, etc