Four different functional buttons enable the reproduction of engine sounds, police sirens as well as fire service sirens and even a yelp signal for a duration of approximately 20 seconds. The yelp signal is particularly suitable in heavy traffic and at junctions to attract even more attention when the blues and twos are switched on in emergency service vehicles. The light function is activated simultaneously with the corresponding sound. This model allows fitting two blue caps (e.g. police), two orange caps (e.g. winter service vehicles) and one read cap (e.g. US emergency services) in any combination. The light and sound module is very versatile thanks to the BRUDER standard connectors. The scope of delivery also includes an adapter to enable using the light and sound module on any truck with a roof hatch. This adapter features additional adhesive surfaces to place the module on any vehicle surface. The packaging is designed so you can test the module before making the purchase.