Figure 2
The visual consists of three side-by-side panels arranged horizontally. The left panel shows an indoor classroom setting with a whiteboard mounted on the left wall, a wall clock positioned above a wooden desk, and a window on the right side allowing daylight into the room. A radiator is visible below the window, and light-colored walls surround the space. The middle panel displays a thermal heat map of the same room surface. The map is labeled “M 1” at the top left and includes a color scale on the right side ranging from 23.8 degrees Celsius at the bottom to 25.6 degrees Celsius at the top, with increments marked along the scale. Warmer areas are represented in red and yellow, while cooler areas are shown in green and blue. A red circular region appears near the upper center of the map. A black cross labeled “M 2” is located slightly right of center. Vertical red bands appear on the left side of the heat map, while the lower right area transitions into blue and green tones. The right panel shows a wall-mounted electronic sensor device with a rectangular casing. The device has horizontal ventilation slots at the top and a digital display screen in the center. The screen shows two numeric values, “55.6” on the top line and “26.4” on the bottom line. A cable extends downward from the bottom of the device, connecting it to the wall.Internal wall thermal camera analysis and placement of Datalogger device