Problem with O3 sensor (SEN0472)

Hi,
 

I encountered a problem with retrieving gas data from my O3 sensor (SEN0472). I connected the O3 sensor with Arduino Mega via I2C, and I uploaded the example sketch readGasConcentration.ino to the Arduino. Attached are the photos that described the problem, The problem is that the returned gasType is CO instead of O3.

I also used the logic analyzer and STM32 with my own code to check the returned I2C package, the 4th byte is 0x04 (ie. gasType is CO). I am wondering is it possible that I received a CO sensor that is wrongly marked as an O3 sensor? 

Thank you.