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Old 11-10-2013, 03:45 PM
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647jc 647jc is offline
 
Join Date: May 2006
Location: Ankeny, Iowa
Posts: 434
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The AA batteries are for powering the unit in a standalone or portable mode. I'm referring to a small (possibly button type or with solder leads) battery I suspect is mounted internally in the unit. I don't even know if the unit has one of these but it probably does and it would use it to maintain a low power memory device that remembers configuration data when the unit is powered off.
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