Get ready to run some red lights with this Ghostbusters Ecto-1 Siren. Jump in your Ecto-1, and plug your phone into the PA system. Press the button and you are ready to run some red lights! For Android 1.6+ For offroad use only! Visit http://www.GBFans.com/ for more Ghostbusters! NOTE: The sound is just like the siren is supposed to sound. In the movie, the siren sounds faster due to the Doppler effect!