IR-Fusion FlexCam Thermal Imager, 20/54mm. The professional's choice when demanding the highest sensitivity, choose the Fluke Ti5x models when you need the best images. They feature 320 x 240 detectors with industry leading thermal sensitivity (=0.05Â°C NETD) for high resolution and ultra high-quality images. In addition, with a 60Hz detector acquisition rate temperatures are displayed live on the large 5-inch color display. Features IR-Fusionâ„¢ technology, which captures a visible light image in addition to the infrared image and takes the mystery out of IR image analysis. It helps to better identify and report suspect components and enable the repair to be done right the first time.