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YouTubeSimplexTech
Simplex 2350 Master Clock - Time Change / Bell Test
This is a Simplex 2350 Master Time System, originally installed in September, 1981 and is in like new condition. After configuring bell schedule programs for the new school year, I reset the time to make sure the tardy bell sounds off at 9:05am. Although the regular class bells are coded as "3" (to ring for a 3 second duration), the warning ...
31.1K viewsAug 21, 2015
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