SEN0465 (O2 sensor) Power Consumption

Recently, I purchased two of these sensors (SEN0465 O2 sensor). However, one of them arrived with a measurement error, but I'll address that in another post.

I bought these sensors because I'm developing an IoT application. The specification for this sensor indicates 'Working Current < 5mA.' However, upon measuring, I found it consumes 15mA @ 3.3V. This exceeds the expected low power consumption. Is there an error in the sensor's specification?

Thank you very much

David