Now, I’m going to come right out and say that I am not an expert on thermal imaging cameras. I do know about cameras and have a better understanding of thermal imaging and some of the things it can be used for, from mechanical applications to operating in dark or low light conditions to measuring failure points in running machinery, pumps and equipment. Tanks where temperature is critical. This camera has what you need. period. In addition to being able to sense heat through walls, the camera's sensitivity is also excellent. I tested from the infrastructure inside my apartment (i.e. air conditioner, water heater, pipes under the floor) to outside in the dark, woods, and smoke, as well as under the hood of my car and chassis, and overall the readings were and All modes of the image are within my expectations.