459 pixels, file size: 50 KB, MIME type: image/jpeg) Description English: A new-style Simplex TrueAlert speaker/strobe fire alarm, installed at the Brockton Public Library in Brockton . This is part of a modern Simplex 4010 system. Date 24 October 2009 ( 2009-10-24 ) (first version); 10 August 2007 ( 2007-08-10 )