The VT04 Visual IR Thermometer from Fluke works as an infrared troubleshooting tool with a built-in digital camera and thermal heat map overlay that bridges the gap between traditional IR thermometers and infrared cameras. Building on the VT02, the VT04 adds PyroBlend Plus technology which gives it four-times sharper resolution than the VT02. The tool displays and saves images as full digital, full infrared, or in three blended modes (25, 50, and 75 percent) with a 40 percent wider field of view than the VT02. It also features an automatic alarm function, so issues can be detected instantly with no training required.