I don't think you could set the temp range manually either? That would be a no go for me too. But everyone has different needs! What might be surprising was that a 320x240 (76k pixels) gives a perfectly acceptable image with over 1000 dead as long as they are scattered. The boot time is around 20s (mostly there is a progress bar) and the switching between the low and high gain takes also around 20-25s (there is no progress bar here). High gain is -15-150C, low gain 150-550C. The UNI-T UTi260B is a thermal camera which offers great value for money with a high thermal resolution, 25 FPS refresh rate, wide temperature range and IP65 rating. It is not that easy to discover the dead pixel count without entering the cameras engineering modes or accessing the dead pixel map. A dead pixel map often exists as an image file containing all the pixels present on the FPA but highlighting those that are market based. The image processing stages read the dead pixel locations out of the image file. Gaining access to the dead pixel map is not a simple task on many cameras unless access can be gained to the operating system and configuration files.

UTi260B Industrial Thermal Imager 256x192 Measures -15~550℃ UTi260B Industrial Thermal Imager 256x192 Measures -15~550℃

The thermal imager camera is also equipped with a 5000 mAh Li-Ion battery which will ensure up to 6 hours of continuous operation. Now let’s look at the camera’s temperature measurement performance. First of all, it has to be the sensitivity since that is instrumental to defining image quality. This camera has a 50 mK NETD which means it’s not bad at all. It means it can spot a temperature difference of down to 50 mK. The lower the number here the more detailed the image will look because the camera is sensitive to even the slightest differences in temperature.

UTi-260B would appear to have been replaced by the UTi-260K so the discontinued model may be available at a good price, as noted by the OP.

UNI-T Thermal Imager UTI260A 256x192 Pixels Thermographic

Now that China is producing its own microbolometers, we may see a change in the production acceptance criteria for cheaper cameras, but that is not something I know about. Whenever low-cost manufacturers introduce a high-end thermal camera in their portfolio, I’m always intrigued. This is the moment where they bring the fight to the big manufacturers and try to bring more to the table in terms of numbers. There’s an unwritten rule: The flagship of one company will be a better offering when compared to the mid-range of another. Why? Because the other company has their own flagship as well which costs even more and thus the mid-range can’t go that far in terms of specs because it will make the flagship redundant. It’s marketing 101.Reliable Quality, IP65 Rating]-- Made of high quality material and is ergonomically designed, with wear resistant and durable shell, anti-slip handle, comfortable operating buttons and tripod mounting hole in the bottom. And with IP65 protection grade and 2m drop resistant, it's more convenient to use for various applications. inch TFT LCD Screen, 7 Color Palettes, Buzzer Alarm]-- Clear LCD screen displays data, image and many kinds of interfaces clearly. Obviously, having digital camera and larger measuring range are the pros of UTI260B. But I chose the 260A for saving money because I always prefer the thermal mode rather than the fusion mode, and maybe simpler could be better.