-Clear large LCD display -Chinese and English bilingual selection -Built-in high-capacity polymer lithium battery for high safety -Display panel immersion gold treatment for improved reliability and durability -With a one-time quick-blow fuse -In addition to the conventional signal input and output functions, there are 8 kinds of thermocouples, the input and output of the frequency signal can be output, and the negative temperature is measured. -All functions are switched using the internal electronic switch, no dial switch is required -V, mV, mA, ?, Hz input and output have corresponding buttons, easy to operate