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Trying to identify an indoor alarm in a movie

Posted: Sun Feb 26, 2017 2:49 pm
by ssp_pro
Hello, I am trying to determine what sort of alarm this is. The film is 28 Weeks Later, and it's purported to be some sort of biohazard alarm in the film. I have a suspicion it may have been created solely for the film using audio software, but I'd just like to be sure. It can be heard at the 1:55 mark in this video.
https://youtu.be/AGcKIc6Bmdc?t=1m55s

Regards,

ssp_pro