Look at the bright side, you are getting 1.5 times more pixels and a more sensitive FPA.
What is more sensitive? The Uni-T sensitivity is less 60mK and HTI is 0.07C. Uni-T also has much wider temp range.
HT-19 arrived and so far I have a few points:
It clicks every few to dozen or so seconds. I think it is related to ranging the color temp. Sounds like a sensitive mechanical device prone to spontaneous dislocation of some moving part. It's annoying because every time I hear it I think that is one click cycle off the device's limited cycle life.
There is no color temp range setting and it is always auto ranging. That means the image always displays the maximum hot and cold colors through the temperature range of what it's looking at. Without the numerical display turned on, there is no way you could tell the temperature of anything or even how different the temperature of an object really is. Here is a circuit board where the first image looks like several hot components, the second image has a soldering iron in the frame and it look much different. I wish the range could be set or at least locked.
You can set the overlay of IR and visual images, in increments on the camera and with a slider in the software. The visual image can be manually offset (both x and y) from the IR image. This is sold as a feature, and it could be, but the visual image will offset itself (only vertically) if you move closer to, or farther from, whatever you are looking at. For example, I am looking at an Arduino from 1 meter away and the PCB fills the center 1/3 of the screen. I adjust the "registration" so that the visual and IR images are in alignment. If I then move the camera to 1/2 meter, the visual image of the PCB is now offset and fills the upper 1/3 of the screen. If I move the camera to 2 meters, the visual image of the PCB is offset in the opposite direction and fills the lower 1/3 of the display. In all cases, the IR image is centered. This offset is less affected at longer focal distances, so moving from 10 meters to 8 meters does not offset the images much, but if you are focusing on things that are close and far in your frame, something is not going to line up. I'm not sure if that is just normal for these devices (and why Uni-T has a "macro" lens), or if the two sensors are not properly aligned (defect)? I've asked the seller, who I think is an official HTI ebay distributor, if that is even a thing...
I went out on a pitch black night to see how the world looked. I got freaked out because every tree had an animal crouching down at its trunk, but I later realized it was just that autorange made the very slightly warmer tree trunks look like glowing red animal balls.
Of course, the first thing you do is check the temp of something the device cannot measure, but look, it records video:
https://i.imgur.com/Nf2kufs.mp4