speedtech lights z-4 tir 12w led strobe light for police cars, construction trucks, service vehicles, plows, emergency vehicles. surface mount grille flashing hazard beacon light - red/clear speedtech lights with its power, versatility, and rugged design, it’s easy to see why the z-4 tir led surface mount warning light head is one of our most popular led grille/surface mount options. the middle-sized option in our z-family, the z-4 tir vehicle warning light model is the perfect accent to your construction, towing, or emergency vehicle. using our proprietary eclipse tir optic technology, the z-4 tir delivers 3-watts of power per led for an overall yield of 12 watts. functionally, the z-4 comes preprogrammed with 24 flash patterns and auto memory recall, enabling you to quickly return to your previous flash setting. easy to install and operate, the z-4 tir led surface mount warning light head is the perfect lighting solution to customize your vehicle.