Avigilon 3.0W-H3-DO1-IR Power Consumption Spec Difference

I am reviewing a design right now that includes the Avigilon 3.0W-H3-DO1-IR outdoor dome with IR. The Avigilon cut sheet indicates power consumption of 9.0W. Here on IPVM the information indicates 22W. Can anyone help me account for this discrepancy? Thanks.

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