Try this link:
Mantronix - King Of The Beats.
*I'm listening to you click the link & shouting
YES!*
You're welcome. Now please reconsider sampling it just because its cool to use the same sounds as everyone else, if you're going to sample it make sure that you find a use for it that hasn't been done a million times already.
For instance the guy who you've linked that used the siren was probably unaware of its origin too. Notice how gated it sounds? He probably ripped it from Jay Dilla & had to cut the end of the sample so its source wasn't plainly obvious. Let's leave the Dilla tributes to Madlib & Detroit then get on with making music with out own personality.