Close.. But not quite. You need to find one with a probe so you can have a probe on the surface over the UTH. The surface on the UTH in the tank should not be any higher than 92*. That one you showed me would work great for telling you the cool temp/ambient temp 78*/81*. but you would have no way of knowing how hot that UTH is where the snake will spend most of its time.
Keep looking. If you found that one Im sure they have one with a probe. Maybe search for indoor/outdoor?