Hi Sir：     Please see my comments:     1. It would it be beneficial to update the saved state every day when accuracy = 3.     2. The above mentioned operation flow work is fine for such a user case.  A few days in good environment, then a few days in bad environment, it make the sensor easy to know what is good and what is bad and output more correct value match the current environment change.     ... View more

Hi Sir:     Maybe they are confidential or internal, these information will be shared with NDA.     I cannot share to you directly on this forum.    ... View more

Hi Sir:       Please see the following comments:       1. When IAQ accuracy is 3, the sensor (or bsec library) will start to actually return out Co2 values.       2. It is important to store the state and set it when the sensor is woken up. It can improve user experience and reduce calibration time.       3. When IAQ accuracy is 3, recommend to store the state. But if the sensor is moved, the stored state will not be effective and if no state information, it only take more time to calibrate.       4. Sensor mode can't be changed during one measurement time.            Recommend the customer use one mode to achieve good performance. If the mode is changed, it needs time to get a stable performance.            Due to sensor hardware performance, after sensor power on, the sensor need a few minutes to achieve a good performance.       Hopefully, it can help you.   ... View more

Hi Sir：      Please see my comments:      1. Due to the different version of API code,  you need to update these interface function.      2. This "intf_ptr " pointer you can ignore if it don't be called for some features in API code.     The reference code is from an old version API code, there are some small gaps, but it is easy to handle them and don't affect the actual usage.      ... View more