Sony ERS-110 - Manual (Page 32)

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Preparing the sound controller
Insert Alkaline batteries into the sound controller.
1
Open the battery cover.
2
Insert two size AA Alkaline batteries.
Matching the + and - on the batteries to the diagram inside the battery
compartment, insert the negative (-) end first.
3
Close the battery cover.
Battery life
About 3 months, depending on how much you use the sound controller. When the
volume of the sound controller decreases or the sound controller no longer operates
AIBO, replace both batteries with new ones.
Preparation