The RT68 series low-power digital thermometer is an intelligent temperature measurement and display instrument developed by Feiyan. The thermometer is powered by batteries, and the temperature sensing element adopts international brand temperature sensors, which have the characteristics of high temperature measurement accuracy and fast response speed; The signal processing and display unit adopts imported high-precision, low-temperature drift, ultra low power consumption integrated circuits and wide temperature LCD displays; The shell is made of stainless steel material and has a fully sealed structure that is waterproof and dustproof, providing strong protection and exquisite appearance. It can be directly used to measure the temperature of gases, liquids, or vapors in industrial and agricultural production processes. It overcomes the disadvantages of low accuracy, large visual error, easy damage and instability in vibration situations of traditional mechanical thermometers, and is an upgraded product of traditional bimetallic thermometers, pressure thermometers, and glass thermometers.