This camera is really good compared to high cost thermal cameras.
The only disadvantage is that at short distances, the thermal image and the optical image overlap with quite a big offset. This means, that at the display, a thermal object is not at the same place at the display, as it is shown in the optical image. This means in practice, that the optical image does not help to find the exact position of the thermal object of interest.
This problem could be fixed or compensated with a software function, where you can adjust the overlap manually. I hope that the firmware developers will add this very helpful feature.