Simulate Police, Fire truck, Emergency flashing lights and police siren sounds on your phone screen. Lights: 13 Police. 2 Ambulance. 2 Fire truck. 4 Music. New! Lights Editor. A variety of siren sounds. You can use as: decoration or garland for the new year or christmas. Light. SOS signal. Like light music in a disco. Light when crossing the road. Strobe in the car.