Robust, easy to use, inexpensive, and the readability is quite enough for the usual domestic and technology area. I used the FlashPen preferably for wall temperature measurements for the determination of heat distribution, heat leaks, radiator temperatures. The device fits in any pocket and can be stowed safely in each toolbox in the supplied tin. Even a set of replacement batteries is !!! The wide scattering angle does not bother me because I can always measure right on the surface. In the preferred ranges used by me from -20 - + 60 ° C the measuring tolerance is well below the specified + - 2 ° C. Particularly when serial measurements is (here is the respective temperature difference to premeasurement decisive) evaluate the accuracy is very high and the values of the series very well.
