Unexpected but plausible results

To test an apartment has been checked tending to a few corners to moisture or mold growth.
If you hold down the "withdrawal" of the thermal detector can be the laser circle over those areas to move one wants to investigate.
Once you get into the vicinity of a mold-prone corner switches the LED on yellow or in the worst case to red.
Areas that have been shown to me as red showed partly. Mold or strong humidity. But unexpectedly were also many yellow areas, where although I could find no mildew, but are noisy PTD1 threatened at least.
Although the recommended measuring distance 0,5m - 1m, I could achieve the same results at a distance of 2m. So you can still check also higher rooms good without a ladder.

Of course you can use the PTD 1 as a pure temperature meter, this has its own mode.
It is interesting that even a slightly shiny surfaces (matt coated frying pan) and slightly transparent surfaces can be measured (lampshade frosted glass).
How exactly here but the indicated surface temperature I can not say for lack of control. Very shiny surfaces lead to significantly wrong results.
An electrical appliance that achieved in standby mode 33 °, I have thus unmasked as electricity consumers. Other electrical appliances showed no or little warming in standby mode.

1 star deduction is because you have to adjust in advance what material is being measured and the bill of materials in the description is not exactly extensive.
There are 3 selection modes and it is cited which mode to choose what material.
Sometimes it is difficult to distinguish.
Another mode of porcelain to choose as for ceramics, as for marble and granite: Thus, for example.
Although the "Material selection" is technically necessary would be here a better explanation on the impact in the manual beneficial or a larger list of materials well.
The differences between the various Materialmodi are noticeable and decide in some cases whether the measured area is shown in yellow or red.
The most common materials (concrete, brick, stucco, wallpaper, wood, paint, metal, etc.) but they are all cited.

A good device whose results are understandable for me. I would buy it again.