How do I know if a power kit is needed?

[Kellojo]

How do I know if a power kit is needed? 

If so, where do I purchase?

[StephenB · Accepted solution]

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@Kellojo wrote:

How do I know if a power kit is needed? 

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The original Arlo video doorbell (AVD1001) is the only one that needs a powerkit.  It shipped with one.

None of the other doorbells (AVD2001, AVD3001, AVD4001) use the power kit.