Re-Created August 23, 2006
Here's an electronic bell that's used on one of the Argentina crossings. It looks pretty similar to a General Signals/Union Switch & Signal electronic bells, but this one is colored black, instead of light gray. The manufacturer of this bell is a company called "Autotrol". Their website is located here, and it is in english.
This kind of bell is exclusive to Argentina, and is not available to the United States, although it would do pretty well over in the states.