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Work At Home Free Classifieds => Post Your Products & Services Here => Topic started by: bestowseo1 on August 05, 2011, 03:02:23 AM
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Electronic variable message centers, LED signs, are computerized programmable electronic visual communication devices. They are capable of storing and displaying multiple messages in dozens of formats and at varying intervals.
http://www.screamingsigns.net/Led_sign_FAQ.html