That's nice. I watched a bit of the movie (amazed at the quality - looked really nice especially when I went full screen with it) and heard the dinging of the signal. So basically they ran with the idea of the bell, based on the ACME and Wiley signals, but this time using it in a more modern style signal.
Hope to see pics of it all hooked up - curious how it's all wired on the inside with the bell working.