Panel-mount reading digital thermometers are connected to an external probe that's used to measure and monitor temperatures. They are typically mounted to monitoring panels in a fixed position. Since they are used for remote monitoring, they do not need to be placed in the same location as the process being measured or monitored. The digital display indicates numeric readings, which are shown on the digital display. They are commonly used to monitor the temperature of liquids or gases flowing through pipes or contained in tanks.