Installing Base Unit Batteries (optional)
1.Push the battery door latch forward using a small tool to remove it from the base unit.
2.Insert four AA batteries (not included).
3.Replace the battery door.
SD7581 User Guide
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1.Push the battery door latch forward using a small tool to remove it from the base unit.
2.Insert four AA batteries (not included).
3.Replace the battery door.
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