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Photos: When tech gets bulletproof

by ZDNet Author  |  July 19, 2006 11:34am PDT  |  Image 7 of 16

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Emergency/fire alarm
Clear out, Madonna's back on. The 4100 U from Simplex is both a music system and an emergency/fire alarm system. "A lot of places want emergency evacuation systems and they want music," a company representative said.

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