Don’t require power plug adapter while traveling from Cook Islands to Pitcairn Islands.

Here's why you do not need an adapter

The outlet and plug type used in Pitcairn Islands is I and in Cook Islands is I and they are compatible with each other.

Cook Islands

In Cook Islands, outlets of type I are in use.

Type I

Pitcairn Islands

In Pitcairn Islands, outlets of type I are in use.

Type I