there was a power surge and the batteries are no longer being charged. Before the unit went completly dead you could hear it continuously switching, back and forth, apparently between the backup batteries and mains power supply.

Asked by Wole on 06/30/2008 1  Answer

ManualsOnline posted an answer 15 years, 10 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here
1 software for battery controll
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